Repair
16
3A5266G
18. Inspect pump base (2) casting for scratches and
scoring. If excessive damage is found, replace
pump.
Pump Lower Reassembly
See Oil and Grease Parts, pages 18 and 20.
NOTE:
Pump Lower Soft Seal Kit 17T654 is available (see page
30). Parts marked with ‡.
Hard Parts and Seal Kit 17T655 is available (see page
30). Parts marked with
❖
.
For best results, use all of the parts in the kit.
1. Press bearing (5
❖
) into the pump cylinder (11
❖
).
2. Install two o-rings (6‡
❖
) around pump cylinder
(11
❖
).
3. Install shovel seal retainer (10
❖
) on piston shovel
rod (12
❖
).
4. Lubricate o-ring (7‡
❖
) and install on the end of the
shovel seal retainer (10
❖
).
5. Install intake seal (17‡
❖
) on the shovel rod (12
❖
)
NOTE:
When installed correctly the flat end of the
intake seal (17‡
❖
) meets the flat surface of the
shovel rod retainer (10
❖
). The jagged end of the
intake seal will be facing the piston rod (19).
6. Install piston seal (18‡
❖
) to piston rod (19
❖
).
7. Clean threads of piston rod (19
❖
) and alignment
rod (13
❖
) with solvent to prepare it for thread lock
-
ing compound (F
8. Apply oil resistant, thread locking compound (user
supplied) to threads of piston rod (19
❖
) and align
-
ment rod (13
❖
). Screw the two rods together.
Torque to 25-35 ft-lbs (34 to 47.5 N•m).
NOTE:
- It may be easier to assemble the two parts by
clamping the piston rod in a vise. Take care
when clamping the rod in vise to not
over-tighten the vise around the rod which
could damage the rod or scratch the outside
surface. Clamp only on recessed surface of
piston rod (19).
- If using a vise, to prevent the rod from rotating
while torquing the two parts. insert a pin that is
longer than the spring pin (20) through the pin
holes.
9. Screw shovel rod (12
❖
) into piston rod (19
❖
).
Tighten until pin holes in each rod (F
. 21) align.
10. Install spring pin (20‡
❖
) through holes aligned in
Step 6 (F
11. Install piston rod (19
❖
) and shovel rod (12
❖
)
assembly inside pump cylinder (11
❖
).
12. Install bearing (5
❖
) in seal retainer (9
❖
).
13. Lubricate wiper seal (4‡
❖
) and install in the seal
retainer (9
❖
).
NOTE:
The lips of the wiper seal (4‡
❖
) should be
facing out; toward the piston shovel rod (12
❖
).
14. Lubricate o-ring (6‡
❖
) and install o-ring around the
seal retainer (9
❖
).
15. If the H-wiper seal (3‡
❖
) was removed in Pump
Lower Disassembly, Step 7, page 15, lubricate new
seal from kit and install it in pump base (2).
NOTE:
The lips of the H-wiper seal (3‡
❖
) should be
facing in; toward the pump cylinder (11
❖
).
F
IG
. 21
20
18
12
10
6
17
13
19
❖
❖
‡
❖
‡
❖
7
‡
❖
‡
❖
❖
‡
❖
❖
F
IG
. 22
3‡
11
