Displacement Pump Repair
Removal
WARNING
To reduce risk of injury due to sprayer starting unexpectedly, shut off engine before performing checks or service.
1.Fig. 4. Flush sprayer. Remove suction hose elbow (150a), pump outlet hose (A) and drain hose (64).
A | 159 | 158 |
| 63 |
|
22
| 85 | |
150a | 27 | |
3 | ||
|
TI3021B
64
Fig. 4
WARNING
MOVING PARTS HAZARD
To reduce risk of amputating fingers, keep fingers away from connecting rod and pin while jogging engine.
2.Fig. 5. Start engine. Jog flow control between PRIME and OFF until connecting rod stops near bottom of stroke. Shut off engine.
3.Loosen two quick disconnect screws (27).
4.Pry retaining spring (37) up on connecting
rod (128). Push pin (38) out with a screwdriver.
5.Fig. 6. Remove cover (C) to control housing (54) by removing four screws (12). Detach pressure transducer cord (63, Fig. 4) from control board (9) at port (D). Remove pressure transducer cord from control box.
6.Fig. 4. Remove air hoses (158) and (159) from prime valve manifold (85). Note correct air hose connection to ports on air cylinder (22). Use 5/16 inch wrench to hold ring on hose fitting while removing hose from fitting.
7.Support weight of pump (3) and remove two quick disconnect screws (27).
8.Unscrew assembled dump valve manifold (85) and air cylinder (22) from pump (3).
D
9
3 | 1 |
38 38
23 201
37 128 
128 | 1 |
|
27 | 61 |
3
Torque to 20
2
Fig. 6
ti3007b
54
12 C
2 |
3
Fig. 5
Back of pump
Cutaway view shows how pin (38) goes through connecting rod
0407
Repair
See page 12 for pump repair instructions.
10 309662