JLG 18RS Service Manual - Manual (Page 137)

SECTION 5 - HYDRAULICS
3121284 – JLG Lift – 5-47
Charge Pressure Relief Valve
Replace the charge pressure relief valve (V010) as a complete
unit. Do not attempt to repair the internal components of the
valve. Torque to 52 N•m [38 lbf•ft] See Charge pressure relief
valve adjustment, page 30, for adjustment instructions.
REMOVAL
1. Using a 22 mm wrench, remove the charge pressure
relief valve (V010). Discard seal (V024).
INSPECTION
1. Inspect the sealing surfaces of the pump for nicks or
scratches.
REASSEMBLY
1. Lubricate and install new seal (V024).
2. Install the charge pressure relief valve. Torque to 52 N•m
[38 lbf•ft].
3. Operate vehicle/machine through full range of controls
to ensure proper operation.
Pressure Limiter Valve Replacement
Replace the pressure limiter valve as a complete unit. Do not
attempt to repair individual components. See Pressure limiter
adjustment, page 31, for adjustment instructions.
REMOVAL
1. Using a 14 mm wrench, remove the pressure limiter
valve (L100). Discard O-ring.
INSPECTION
1. Inspect the sealing surfaces of the pump for nicks or
scratches.
REASSEMBLY
1. Install new O-ring. Lubricate 0-ring with petroleum jelly.
2. Replace pressure limiter valve. Torque to 30 N•m [22
lbf•ft].
3. Operate pump at full range of controls to ensure proper
machine operation.
NOTE: Pressure limiter is available as complete unit only. O-ring is
available separately.
Figure 5-54. Charge Pressure Relief Valve
Figure 5-55. Pressure Limiter