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Repair
19
Replace the Ball Check Valves
Disassembly
1. Prepare the pump for repair, page 14.
2. Remove the screws (38) and take the tube assem-
blies off the pump. See FIG.8.
3. Remove the springs (65), ball guides (57), and balls
(56) from the outlet (top) check valves.
4. Insert a dowel through the outlet seats (53) and
push the inlet (bottom) valve parts (65, 57, 56, 53,
58) out of the pump. Remove the flat seal (59).
5. Insert a dowel through the inlet ports and push the
outlet valve seats (53) and sleeves (54) out of the
pump. Remove the flat seals (55, 59).
Reassembly
1. Install the outlet check valves into the fluid covers
(1): a flat seal (59★), seat (53‡), seal (59★), sleeve
(54), ball (56‡), ball guide (57‡), spring (65‡), and
seal (55★).
2. Install the outlet tube assembly. Torque the screws
(38) to 10 N•m (7.4 ft-lb).
3. Install the inlet check valves into the fluid covers (1):
a spring (65‡), ball guide (57‡), ball (56‡), seat
(53‡), flat seal (59★), and seal (58).
4. Install the inlet tube assembly. Torque the screws
(38) to 10 N•m (7.4 ft-lb).
Ball Check Valve Repair Kit 243154 is available.
Parts included in the kit are marked, for example
(56‡). For the best results, use all parts in the kit.
Sealing Ring Repair Kit 243156 is available. Parts
included in the kit are marked, for example (55★).
For the best results, use all parts in the kit.
If the ball is stuck in the seat, pry it loose with a
screwdriver.
Some parts will be reused, so be careful not to
drop or lose parts.
CAUTION
The outlet ball check valves must be installed exactly
as shown in FIG.8:
• beveled side of seat (53) must face the ball (56)
• beveled end of sleeve (54) must face the seat (53)
• open end of ball guide (57) must face the ball (56)
• turned down end of spring (65) must face the ball
guide (57)
CAUTION
The inlet ball check valves must be installed exactly
as shown in F
IG.8:
• turned down end of spring (65) must face the ball
guide (57)
• open end of ball guide (57) must face the ball (56)
• beveled side of seat (53) must face the ball (56)
• wide end of seal (58) must face the seat (53)