Maintenance
3A7519A
15
8.
Replace the check ball (15) between the
displacement rod (14) and the fluid piston (9) (F
24).
9.
Remove the piston seal retainer (12), the piston seal
(11), and the piston seal back-up rings (10), and
replace with new parts from the seal repair kit (F
25).
NOTE:
•
The chamfer on the seal back-up ring must be
pointing away from the seal (F
•
The piston seal has a green o-ring.
10. Reinstall the fluid piston (9) and the connecting rod
(13) using one wrench on the displacement rod flat
and a 15/16 in. socket on the connecting rod (13)
and then tighten (torque 140 - 160 ft-lb/189.8 -
216.9 N•m) (F
11. Remove the seal retainer (6) from the pump cylinder
(2) (F
12. Remove the priming seal (30) and the priming seal
back-up rings (29) and replace with new parts from
the seal repair kit (F
NOTE:
•
The chamfer on the seal back-up rings must be
pointing away from the seal (F
. 28).
•
The priming seal has a yellow o-ring.
•
Priming seal back-up rings have identification marks
on the chamfered face to distinguish it from the
piston seal back-up rings.
F
IG
. 24
F
IG
. 25
F
IG
. 26
15
11
10
12
F
IG
. 27
F
IG
. 28
9
13