311021 23
Displacement Pump
See manual 309277 for pump repair instructions.
Removal
1. Flush pump.
2. Relieve pressure; page 7.
3. Fig. 11. Remove suction tube (34) and hose (26).
Fig. 11
ti6514a
26
34
C
UTION
Gallon counter may error if magnet ring and/or
sensor assembly are damaged during disassembly
and assembly.
4. Fig. 12. Push magnet ring (222) up. Push retaining
spring (194) up. Push out pin (249).
194
Fig. 12
ti6515a
222
249
5. Fig. 13. Loosen jam nut. Unscrew pump.
Fig. 13
ti6516a
Installation
C
UTION
If the pump jam nut loosens during operation, the
threads of the hydraulic motor manifold will be dam-
aged. Tighten jam nut as specified.
1. Fig. 14. Screw jam nut to bottom of pump threads.
Screw pump completely into manifold. Unscrew
pump from manifold until pump outlet aligns with
hose. Hand tighten jam nut, then tap 1/8 to 1/4
turn with hammer or torque to 200 ft-lb (270 N·m).
Fig. 14
ti6517a
2. Fig. 15. Slowly pull engine starter rope until pump
rod pin hole is aligned with hydraulic rod hole.
Fig. 12. Push pin (249) into hole. Push magnet ring
(222) down. Push retaining spring (194) into
groove.
Fig. 15
ti6518a
222
Fig. 16. Fill packing nut with Graco TSL.
Fig. 16
ti6519a