Post on 22-Mar-2023
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
NOTE: API couplers should always be used in conjunction with primary shutoff system such as a meter with preset valve. A relief valve must be provided for the trapped product between the primary shutoff and the API coupler.
WARNING care must be taken when manually operating the lugs as the sleeve is under considerable spring pressure. Ensure that nothing will become trapped between the body and sleeve when it moves forward.
IMPORTANT: Before you begin, drain the line of all product. This can be done by depressing the 5 interlock claws on the coupler (23), the safety lug (24) and turning the lever (3).
J0452 Coupler with Pump API Coupler Note: Pump not shown
in this view for clarity. Please see page 3 for
information on the pump. (J0452-15* Shown)
Fig. 1
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
ITEM QTY 051
P
052
P
151
P
152
P
DESCRIPTION PART
NUMBER MATERIAL
1 1 ● ● Body, Side Lever & Pump 673258 Aluminum 356-T6
1 1 ● ● Body, Top Lever & Pump 673298 Aluminum 356-T6
2 1 ● ● ● ● Sleeve 673260 Aluminum 356-T6
3 1 ● ● ● ● Lever 673259 Aluminum 356-T6
4 1 ● ● ● ● Nose Piece 673991 Aluminum 6061-T6
5 1 ● ● Retractor Bale, Side Lever 673440 Aluminum 356-T6
5 1 ● ● Retractor Bale, Top Lever 673255 Aluminum 356-T6
6 1 ● ● ● ● Retractor Handle 673264 Stainless Steel
7 1 ● ● ● ● Nose Ring 673265 Aluminum 6082-T6
8 1 ● ● Nose Seal 672213 Viton
8 1 ● ● Nose Seal 672550 Buna
9 1 ● ● ● ● Shaft 672319 Stainless Steel
10 1 ● ● ● ● Poppet 673992 Aluminum 356-T6
11 1 ● ● ● ● Bearing 560594 Plastic
12 1 ● ● ● ● Bearing 560595 Plastic
13 1 ● ● O-Ring 407433 Viton
13 1 ● ● O-Ring 564769 Buna
14 1 ● ● ● ● Spacer 240805203 Nylon
15 1 ● ● ● ● O-Ring (Dust Seal) 561320 Buna
16 1 ● ● ● ● Retaining Ring 408169 Steel
17 1 ● ● ● ● Link 408254 Stainless Steel
18 2 ● ● ● ● Bent Link 408262 Stainless Steel
19 2 ● ● ● ● Spring Pin 561852 Stainless Steel
20 4 ● ● ● ● Hitch Pin 560489 Stainless Steel
21 1 ● ● ● ● Wave Spring 564090 Stainless Steel
22 2 ● ● ● ● Link Pin 408252 Stainless Steel
23 5 ● ● ● ● Locking Claw 674213 Stainless Steel
24 1 ● ● ● ● Safety Lug 674190 Stainless Steel
25 6 ● ● ● ● Roll Pin 470078 Stainless Steel
26 4 ● ● ● ● M8 Thin Washer 671270 Stainless Steel
27 1 ● ● ● ● Safety Lug Spring 674191 Stainless Steel
28 2 ● ● ● ● Retractor Guide 673241 Stainless Steel
29 2 ● ● ● ● Retractor Spring 577205 Stainless Steel
30 1 ● ● O-Ring 672741 Viton - PTFE Treated
30 1 ● ● O-Ring 672551 Buna
31 5 ● ● ● ● Locking Claw Spring 673269 Stainless Steel
32 8 ● ● ● ● M4 x 10 C’Sunk Screw 617025 Stainless Steel
33 2 ● ● ● ● Cotter Pin 234131 Stainless Steel
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
API Coupler Return Pump
ITEM QTY DESCRIPTION PART No. MATERIAL
34 2 Packing 516046200 Felt
35 1 Star Retaining Ring 244008001 Stainless Steel
36 1 Retaining Ring 518092210 Zinc Plated Steel
37 1 Cover 513170200 Nylon
38 2 Plug 302123204 Zinc Plated Steel
39 2 ¼” Ball Bearing 510201200 Stainless Steel
40 2 Check Valve Spring 517000203 Stainless Steel
41 1 Roll Pin 470029 Stainless Steel
42 1 Pump Body 500052200 Aluminum 356-T6
43 2 Check Valve Housing 500073204 Aluminum 6061-T6
44 1 Filter 306050200 Foam
45 1 Washer 240803801 Aluminum 6061-T6
46 1 Orifice Cap 240816802 Aluminum 6061-T6
47 1 Sleeve 532120200 Stainless Steel
48 1 Piston 541010205 Delrin
49 1 Bearing Disc 510031200 Delrin
50 1 Push Rod 504083200 Stainless Steel
51 1 Pump Spring 401006 Stainless Steel
52 1 U Cup Seal 512050212 Viton
53 3 O-Ring 405968 Viton
54 2 O-Ring 522011234 Viton
55 2 O-Ring 522011233 Viton
56 1 Gasket (not shown) 577362 Buna
57 2 Socket Screw O-ring (not shown) 566306 Buna
58 2 Lock Washer (not shown) 577693 Stainless Steel
59 2 Mounting Screw (not shown) 673280 Stainless Steel
60 2 Mounting Screw (not shown) 673281 Stainless Steel
46 37 43 40 53 45 35 36
49 50
51 48
54
34
41
52 47 38
42
55 39
44
Fig. 2
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
J0452 Pump Variants
• J0452-051 – Side Lever, Viton Seals & Pump
• J0452-052 – Side Lever, Buna Seals & Pump
• J0452-151 – Top Lever, Viton Seals & Pump
• J0452-152 – Top Lever, Buna Seals & Pump
Spares Kits
Viton Seal Kit – Part No. 494529
Item Qty Description Part No.
8 1 Nose Seal 672213
11 1 Bearing 560594
12 1 Bearing 560595
13 1 O-Ring 407433
15 1 O-Ring 561320
19 2 Spring Pin 561852
21 1 Wave Spring 564090
25 2 Roll Pin 470078
30 1 O-Ring 672741
Buna Seal Kit – Part No. 494530
Item Qty Description Part No.
8 1 Nose Seal 672550
11 1 Bearing 560594
12 1 Bearing 560595
13 1 O-Ring 564769
15 1 O-Ring 561320
19 2 Spring Pin 561852
21 1 Wave Spring 564090
25 2 Roll Pin 470078
30 1 O-Ring 672551
LT Viton Seal Kit – Part No. 494531
Item Qty Description Part No.
8 1 Nose Seal 672528
11 1 Bearing 560594
12 1 Bearing 560595
13 1 O-Ring 672548
15 1 O-Ring 561320
19 2 Spring Pin 561852
21 1 Wave Spring 564090
25 2 Roll Pin 470078
30 1 O-Ring 672549
Nose Piece & Poppet Kit – Part No. 674227
Item Qty Description Part No.
4 1 Nose Piece 673991
10 1 Poppet 673992
20 2 Hitch Pin 560489
22 2 Link Pin 408252
J0452-05*P Variant J0452-15*P Variant
Fig. 3 Fig. 4
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
To Change Nosepiece Seal – Kits 494529, 494530 & 494531
1. Once fully drained, remove coupler from loading arm at flange.
WARNING care must be taken when manually operating the lugs as the sleeve is under considerable spring pressure. Ensure that nothing will become trapped between the body and sleeve when it moves forward.
2. Depress the 5 Locking Claws (23) and the Interlock
Lug (24) to allow the sleeve to move forward under spring pressure.
3. Turn the Lever (3) to open the coupler to allow access to the poppet linkage assembly. (Poppet linkage assembly consists of the Poppet (10), Bent Links (18) and Link Pins (22).
Claws & Interlock Lug Kit – Part No. 673293
Item Qty Description Part No.
19 1 Spring Pin 561852
20 2 Hitch Pin 560489
23 5 Locking Claw 674213
24 1 Interlock Lug 674190
25 5 Roll Pin 470078
27 1 Interlock Spring 674191
31 5 Locking Lug Spring 673269
33 2 Cotter Pin 234131
J0452 Lever Kit – Part No. 673295
Item Qty Description Part No.
3 1 Lever 673259
15 1 O-Ring No. 312 561320
25 1 Roll Pin 470078
Nose Ring Kit – Part No. 673294
Item Qty Description Part No.
7 1 Nose Ring 673265
32 8 Screw 617025
J0451/J0452 Shaft Kit – Part No. 672869
Item Qty Description Part No.
9 1 Shaft 672319
16 1 Ret. Ring 408169
19 1 Spring Pin 561852
25 1 Roll Pin 470078
Pump Viton Seal Kit– Part No. 673951 Item Qty Description Part No.
34 0.83' Felt Packing 516046200
36 1 Star Retaining Ring 244008001
44 1 Filter 306050200
52 1 U-Cup Seal 512050212
53 3 O-Ring EW-405968
54 2 O-Ring 522011234
55 2 O-Ring 522011233
24
23
Fig. 5
Fig. 6 Fig. 7
3
Fig. 8 Fig. 9
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
4. With no tension on the poppet assembly, use needle nose pliers to remove one set of the Hitch Pin (20), Link Pins (22) and Washers (26). (Fig. 11)
5. After the pin set has been removed, remove
poppet assembly from the body bore. Carefully remove the Nosepiece (4) and Wave Spring (21). Do not nick the bore in the process. (See Fig. 12)
6. If replacing O-Ring (30) & Nose Piece Seal (8).
Without scratching the seal seats on the Nosepiece (4), use a pick to carefully remove Nose Seal (8) and the O-Ring (30). If not replacing O-Ring & Nose Piece Seal Move to step 8.
7. Using a solvent, thoroughly clean the bore and
nosepiece seal grooves. Make sure all grit is removed. Carefully assemble New O-Ring (30) & Nose Piece Seal (8) into the Grooves. Apply Parker Super Lube (or equivalent) to outside of Nose Piece Seal once assembled.
8. If shaft seal needs replacing, go to steps 9-12 before reattaching poppet and
bent links. If not then reassemble, reversing the above steps. Once Coupler is fully reassembled pull back Retractor Handle (6) pulling the Coupler Sleeve back into the Uncoupled Position (Fig. 6). The Coupler is now ready for use.
To Change Shaft Seals - Kits 494529, 494530 & 494531
9. With Lever still open, use a hammer and punch
to remove roll pin (25) from lever (3). Slide lever off the end of the shaft. (See Fig. 13)
10. Remove dust seal (15) with picking tool. Discard
dust seal. Remove retaining ring (16) with retaining ring pliers. (See Fig. 14)
11. Slide shaft out to expose spacer (14) and O-
Ring (13). Remove spacer and O-Ring discard O-Ring. Thoroughly clean the bore. If Replacing Bearings (11&12) go to step 13.
12. Lubricate New O-Ring (13) with Parker Super Lube (or equivalent) and
assemble in reverse order. Lubricate new dust seal (15) before installation. Replace Lever (3) and using a hammer & punch install New Roll Pin (25). (See Fig. 13) Return to step 8.
22
26
20
Fig. 10 &11
18 30 4 10 8 22 21
Fig. 12
25
Fig. 13
15 16 14 13 9
Fig. 14
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
13. Use a hammer and punch to remove roll pin (19) to free link (17) on shaft. Slide shaft (9) out of Body and link off shaft. (See Fig. 15)
14. Remove Top Bearing (12) and Bottom Bearing
(11) (Fig. 16) and discard.
15. Thoroughly clean the bores, replace Top and Bottom Bearings (11 &12). 16. Lubricate Shaft (9) with Parker Super Lube (or equivalent) as indicated in Fig.
17 and replace into bore with Link (19), push shaft all the way in. Use New Spring Pin (19) to secure link to shaft with hammer. Return to step 12.
To Change Claws & Interlock Lug – Kit 673293
WARNING care must be taken when manually operating the lugs as the sleeve is under considerable spring pressure. Ensure that nothing will become trapped between the body and sleeve when it moves forward.
17. Follow steps 1 & 2 to move sleeve forward. 18. Remove Screws (59 & 60, 2 Off Each) O-Rings
(57) and Lock Washers (58) with 3/16 Allen Key. Carefully remove Pump and Gasket from Coupler Body (See Fig. 18). Be careful not to loose Ball Bearing (39), Spring (40), Orifice Cap (46) and O-Ring (53) from inside of pump (See Fig. 19).
17 19
Fig. 15
9
11 12
Fig. 16
Fig. 17
Lubricate Here Lubricate Here
Fig. 18 60 57 59 58
53 Fig. 19 39 40 46
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
19. Follow steps 3 to 13 to strip down coupler without discarding or replacing any parts. Keep removed parts to one side for re-assembly.
20. Remove Cotter Pins (33) (discard) and washers
(26) from either side of Coupler. (See Fig. 20)
21. Pull Retractor Handle (6) out of Retractor Bale (5). (See Fig. 20)
22. Remove Hitch Pins (20) (discard) from Retractor
Guide (28) on both sides of Coupler. (Fig 21)
23. Use Pliers inside of Retractor Spring (29), depress retractor spring, grip Retractor Guide (28) and slide guide out of the Coupler. Once retractor guide removed, remove retractor spring. Repeat process to remove spring and guide on the other side of the Coupler. Warning, be careful whilst completing this step as the mechanism is highly sprung. The Retractor Bale (5) will now fall away from the Coupler. (Fig. 22)
24. The Coupler Sleeve (2) is now free to be slide off the back of the Coupler Body (1). (Fig. 23)
25. Use a punch and hammer to remove Roll Pin
(25) from Body (1). The Locking Claw (23) will now be free to remove. Repeat process for the other 4 locking claws. Discard locking claws and roll pins. (Fig. 24)
26. Insert New Locking Claw (23) into the slot in the
Body (1). Secure locking claw to body with New Roll Pin (25) with a hammer. Repeat process for other 4 Claws. (Fig. 24)
33 Fig. 20
26
5
6
Fig. 22
29
28
5
1 Fig. 23 2
Fig. 24
23
1
25
Fig. 21
20
Note: Hitch Pin pulled all the way through when re-assembling
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
27. Use a punch and hammer to remove Spring Pin (19) from Body (1). The Safety Lug (24) and Spring (27) will now be free to remove. Discard safety lug, spring and spring pin. (Fig. 25)
28. Insert New Safety Lug (24) into the slot in the
Body (1). Secure interlock lug to body with New Spring Pin (19) with a hammer. Insert New Spring (27). (Fig. 25)
29. Slide Coupler Sleeve (2) over Coupler Body (1) (Fig. 23).
30. Depress 5 x Locking Claws (23) and Safety Lug (24) (Fig. 5) to allow the sleeve to slide forward (Fig. 7).
31. Reassemble Coupler & pump reversing steps 18 to 23 using existing parts except for New Cotter Pins (33) and New Hitch Pins (20) to retain Retractor Guide (28). Pull Hitch Pins all the way through (Fig. 21). N.B. Apply a small amount of Parker Super Lube (or equivalent) to the top of the orifice cap o-ring (53) to help retain the check valve assembly whilst reinstalling the pump to the coupler. (Fig.19)
32. Once Coupler is fully reassembled pull back Retractor Handle (6) pulling the
Coupler Sleeve back into the Uncoupled Position (Fig. 6). The Coupler is now ready for use.
To Change the Nose Ring – Kit 673294
33. Undo the 8 screws (32) on the front of the coupler using a 2.5mm allen key. (Fig. 26)
34. Remove the nose ring (7) and discard. If the
nose ring is difficult to remove, use a screwdriver to lever the ring off. (Fig. 26)
35. Replace nose ring and fit new retaining screws.
Use one drop of a medium strength thread locking compound such as loctite 241/2/3, on each screw. (Fig. 26)
To Change the Lever– Kit 673295
36. Follow steps 1 to 3 to open Coupler.
37. Using a hammer and punch, remove roll pin (25) from lever (3). Slide lever off the end of the shaft. (See Fig. 13)
Fig. 26
32 7
Fig. 25 24 19
27
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
38. Remove dust seal (15) with picking tool. Discard dust seal. Lubricate New Dust Seal (15) with Parker Super Lube (or equivalent) before replacing. (See Fig. 14)
39. Replace New Lever (3) and using a hammer & punch install New Roll Pin (25).
(See Fig. 13)
40. Turn Lever (3) back to the closed position and pull back Retractor Handle (6) pulling the Coupler Sleeve back into the Uncoupled Position (Fig. 6). The Coupler is now ready for use.
To Change shaft – Kit 672869 41. Follow steps 1 to 13 to remove current Shaft (9) without discarding any
parts except for the Retaining Ring (16). 42. Lubricate New Shaft (9) with Parker Super Lube (or equivalent) as
indicated in Fig. 17 and replace into bore with Link (17), push shaft all the way in. Use New Spring Pin (19) to secure link to shaft with hammer.
43. See Fig. 14: Lubricate O-Ring (13) with Parker Super Lube (or
equivalent) and assemble in reverse order, use New Retaining Ring (16) before assembling Dust Seal (15). Lubricate dust seal before installation. Return to step 8.
To Change Seals on the Pump – Kit 673951
44. Follow steps 17 & 18 to remove Pump from
Coupler. 45. Using a small pick, remove from the pump to
body connection the following items: Orifice Cap (46) and O-Ring’s (53), Spring (40), Ball (39), Check Valve Housing (43), and O-Ring Seat (55). Discard both O-Rings. (Fig. 27)
46. Remove Plug (38) from one side of pump before
removing Filter (44), discard filter. (Fig. 28)
47. Remove the rear Vinyl Cover (37). (Fig, 29)
48. Using Retaining ring pliers remove the pump piston Retaining Ring (36) from its grove and slide rearward while extracting the push rod assembly. (Fig. 29)
Fig. 27 39 40 53 53 43 55 46
Fig. 28 44 38
36 37 Fig. 29
Push Rod Ass.
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
49. Remove from the Push Rod Assembly the Bearing Disk O-Ring (54), U-Cup Seal (52), and 2 off Felt Packing (34). Discard. (Fig. 30)
50. Using a pick pry out the Star Retaining Ring (35)
from the bottom of the piston bore inside the pump body. (Fig 31.)
51. With the star retaining ring removed pick out the Washer (45), O-Ring (53),
Spring (40), Ball (39), Check Valve Housing (43), and O-Ring Seat (55). Discard o-rings and star retaining ring. (Fig. 31)
52. Clean all remaining items thoroughly.
To Rebuild the Pump
53. Reassemble the check valve in the bottom of the piston bore by inserting the components in this order: New O-Ring Seat (55), Check Valve Housing (43), Ball (39), Spring (40), New O-Ring (53), Washer (45), and New Star Retaining Ring (35). Using a punch ensure that the star retaining ring is pushed firmly against the washer. (Fig. 31)
54. Install two pieces of New Felt (34) (pre-soaked
in silicone oil) onto the first and last groves of the pump piston. (Fig. 32)
55. Install the New U-Cup Seal (52) with the cup
facing the flat end of the pump piston onto the centre grove of the pump piston. (Fig. 32)
56. Install the New O-Ring (54) onto the bearing disk of the push rod assembly.
Lubricate the u-cup and o-ring with Parker Super O lube. (Fig. 32)
57. Insert the Pushrod Assembly and Retaining Ring (36) into the piston bore until the retaining ring fits into the retention grove. Reinstall the Rear Vinyl Cover. (37) (Fig. 29)
58. Insert New Foam Filter (44) and reinstall Plug (38) (Fig. 28)
Fig. 30
54
34
52
34
Fig. 31 55 43 39 40 53 45 35
34 Fig. 32
52 34 54
Emco Wheaton UK Limited, Channel Road, Westwood Industrial Estate,
Margate, Kent, CT9 4JR, UK Tel: +44 (0) 1843 22152, Fax: +44 (0) 1843 295444
assist@emcowheaton.co.uk, www.emcowheaton.co.uk
Service Sheet SSJ0452P
Sheet:
SS
J0
45
2P
, 1
7/0
4/1
2,
Rev:
2
A
s a
part
of
a c
ontinu
ous c
om
mitm
ent
to p
rod
uct
de
velo
pm
ent
the c
om
pa
ny r
eserv
es t
he r
ight to
alter
the s
pecific
atio
n o
f its p
roducts
witho
ut
prio
r n
otice
59. Reassemble the Check Valve in the pump to body connection by inserting the components in this order: New O-Ring Seat (55), Check Valve Housing (43), Ball (39), Spring (40), New O-Ring (53), Orifice Cap (46), and New Orifice Cap O-Ring (53). (Fig. 27). Apply a small amount of Parker Super Lube (or equivalent) to the top of the new orifice cap o-ring to help with retaining the check valve assembly whilst reinstalling the pump to the coupler. (Fig. 27)
60. Install O-Rings (57) onto the socket head cap screws for the front of the pump
assembly, and align the Pump Gasket with front mounting holes of the pump assembly. (Fig. 18)
61. With Coupler Sleeve still in the forward position. Mount the pump assembly to
the coupler body ensuring that all seals remain in place. (Fig. 18)
62. Torque the mounting screws to 2.5 Nm.