JLG DVSP Series Service Manual - Manual (Page 79)

SECTION 4 - CONTROL COMPONENTS
3121136 – JLG Lift – 4-21
4.8 PUMP-MOTOR ASSEMBLY -
SERVICE PROCEDURE
General
The following is a complete disassembly/assembly of the
DVL/DVSP machines’ pump/motor assembly. No internal
parts to the hydraulic pump are serviced by JLG except for a
pump installation seal kit. Also the only parts serviceable
internal to the pump electric motor is the motor brush kit.
NOTE: During reassembly of the pump/motor assembly,
apply a liberal coat of JLG recommended hydraulic
fluid to all seals and o-rings.
Also keep all internal metal parts clean and coated
with hydraulic fluid to prevent surface corrosion.
JLG recommends replacing all seals and o-rings
when disassembling and reassembling the pump/
motor unit.
The motor and motor brushes can be serviced without
removing the complete pump/motor unit. However compo-
nents on the bottom end of the unit will require removal of
the complete pump/motor unit. See Pump/Motor/Tank
Installation instructions following.
Inline Hydraulic Filter Installation
Pump/Motor/Tank Installation
IMPORTANT
BE CERTAIN THE MAST IS FULLY LOWERED BEFORE REMOVING
ANY HYDRAULIC LINES FROM THE PUMP UNIT. WEAR PROTECTIVE
GEAR WHEN WORKING AROUND PRESSURIZED HYDRAULIC LINES.
REMOVE CONNECTIONS CAREFULLY AND CAP ALL LINES.
Pump/Motor/Tank Assembly Installation
1. Valve Body Extend Line Fitting 3. Extend Line to Lift Cylinder
2. Inline Hydraulic Filter
1 2
3
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.
1
3
2
2