Hydraulic System Servicing; Hydraulic Pump Assembly; 6-1.1 Removal; 6-1.2 Installation - Big Joe M22 Installation, Operation, Maintenance & Repair Parts

6-1. HYDRAULIC PUMP ASSEMBLY.

6-1.1. Removal
WARNING: Before disconnecting any hydraulic line,
make sure the forks are lowered com-
pletely and the system is not under pres-
sure.
1. Disconnect battery.
2. Fully lower the lift carriage.
3. Turn the two screws on cover and remove the
cover.
4. Free the rubber boot for the control lever and
push it down into the compartment.
WARNING: Before disconnecting any hydraulic lines,
check that the system is not under pres-
sure.
5. Disconnect pressure hose and return hose from
fittings on pump assembly.
6. Remove fittings and washers from pump assem-
bly.
DY_0003
BL-M22EP-0119 - 01-11-2019
SECTION 6

HYDRAULIC SYSTEM SERVICING

7.
8.
6-1.2. Installation
1.
2.
3.
4.
5.
6.
7.
8.
9.
Figure 6-1 Hydraulic System
Label, then disconnect cables and wires from
pump assembly.
Remove two bolts, lock washers and flat washers.
Lower pump assembly out of the truck.
While supporting the pump assembly ( install
screws, lock washers and flat washers.
Reconnect fittings and washers from pump
assembly.
Reconnect pressure hose and return hose from
fittings on pump assembly.
Fill the hydraulic reservoir. Use hydraulic oil listed
in Table 3-2.
Reconnect cables and wires to pump assembly.
Reconnect the battery and turn on the truck.
Operate the lift and lower to refill the cylinder and
lines with hydraulic oil.
Check level of hydraulic oil to bring to proper
level. Use hydraulic oil listed in
Install cover (2) and secure with the two thumb
screws.
Table 3-2.
6-1