JLG 3246E2 ANSI Service Manual - Manual (Page 71)

SECTION 3 - TROUBLESHOOTING
3120737 – JLG Lift – 3-3
Table 3-2. Hydraulic System Troubleshooting Chart
TROUBLE PROBABLE CAUSE REMEDY
Hydraulic pump noisy
Air bubbles in oil (reservoir to low.) Replenish oil as necessary
Oil filter dirty Clean and/or replace filter as necessary
Pump cavitating. (Vacume in pump due to oil
starvation)
Oil is reservoir too low Replenish oil as necessary
Restricted reservoir air vent Clean vent
Oil viscosity too high Drain system and replace with recom-
mended oil. Refer to Table 1-2, Hydralic Oil
System overheating
Oil viscosity too high Drain system and replace with recom-
mended oil. Refer to Table 1-2, Hydralic Oil