Service Manual

SECTION 4 - CONTROL COMPONENTS

4-22 – JLG Lift – 3121231

After Filter Pressure Check

Reinstall the hydraulic oil filter and install the t-fitting

between the hydraulic filter and the extend line to the cyl-

inder. Recheck the hydraulic pressure and compare with

the previous readings when filter was removed. If a signifi-

cant drop in pressure reading has occurred, replace the

hydraulic filter and recheck the "after filter" pressure read-

ing.

Pump/Motor/Tank Installation

BE CERTAIN THE MAST IS FULLY LOWERED BEFORE REMOV-

ING ANY HYDRAULIC LINES FROM THE PUMP UNIT. WEAR PRO-

TECTIVE GEAR WHEN WORKING AROUND PRESSURIZED

HYDRAULIC LINES. REMOVE CONNECTIONS CAREFULLY AND

CAP ALL LINES.

1. Hydraulic Oil Filter 3. Pressure Gauge Assembly

2. T- Fitting 4. Extend Line

Figure 4-8. Typical Hydraulic Pressure Gauge

Installation (After Hydraulic Filter).

Pump/Motor/Tank Assembly Installation

1. Pump/Motor/Tank Assembly 3. Detach and Cap Extend

2. Attach Screws/Washers and Return Lines

Note: See Figure 4-2. for wiring connection instructions.