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312375J 13
5. If it was necessary to remove the priming piston rod
(24) from the piston (23), apply thread sealant to
threads of the rod. Place flats of piston in a vise.
Hold flats of rod with an adjustable wrench, and
screw rod into piston; see the following table for cor-
rect torque. Be careful not to create burrs on flats of
rod.
6. Place flats of displacement rod (1) in a vise. Install
piston seat/guide assembly onto the piston (23).
Apply thread sealant to threads of rod and screw
piston assembly onto rod; see the following table for
correct torque.
7. Lubricate seal (18) and place it on top of the cylin-
der (17). Screw cylinder handtight into outlet hous-
ing (2). The cylinder is symmetrical so either end
can be the top.
8. Carefully insert displacement rod (1) into bottom of
cylinder (17). Push rod up into cylinder and through
outlet housing (2). Be careful not to damage piston
seal (31) while performing this step.
Displacement
Pump Torque
60cc and 100cc 34-38 ft-lbs (46-51 N•m)
200cc and 250cc 92-102 ft-lbs (124-138 N•m)
500cc 90-100 ft-lbs (122-135 N•m)
Displacement
Pump Torque
60cc and 100cc 85-95 ft-lbs (115-128 N•m)
200cc and 250cc 239-271 ft-lbs (323-366 N•m)
500cc 327-363 ft-lbs (441-490 N•m)
F
IG. 20
ti10574a
1
piston assembly
Steps 7- 13 apply to 60cc, 100cc, 200cc, and
250cc displacement pumps only.
F
IG. 21
F
IG. 22
ti10575a
2
18
17
ti10577a
1
17
2