Hydraulic Pump Removal And Replacement - jcb JS300 Service Manual

Hydraulic Pump Removal and Replacement

Removal
!M
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you.
Before connecting or removing any hydraulic hose,
residual hydraulic pressure trapped in the service
hose line must be vented. Make sure the hose service
line has been vented before connecting or removing
hoses. Make sure the engine cannot be started while
the hoses are open.
INT-3-1-11_2
!M
WARNING
This component is heavy. It must only be removed or
handled using a suitable lifting method and device.
BF-4-1_1
1 Make the machine safe, refer to Section E, Service
procedures.
2 Drain the hydraulic fluid from the hydraulic tank.
3 Disconnect all hydraulic hoses and pipes from the
hydraulic pump and plug all orifices to prevent ingress
of dirt.Label each hose before disconnecting, this will
ensure correct position when refitting.
4 Disconnect electrical
solenoid on hydraulic pump.
5 Attach lifting eyes to the pump. Support weight of the
pump with suitable lifting apparatus, refer to Section
E, Technical Data.
6 Remove engine exhaust muffler bracket from pump
flange 2 by removing three set pins 3. Remove the
remaining nine set pins 3 and washers from pump
flange 2.
7 Withdraw the pump clear of the engine. When clear of
engine, lift pump clear of machine.
E-62
connection to proportion
9813/5100-1
Section E - Hydraulics
Hydraulic Pump/Regulator
Hydraulic Pump Removal and Replacement
3
Fig 5.
8 Remove rubber flange 5 from pump coupling 4 by
removing the two retaining bolts 6.
9 Loosen the two grub screws on the pump coupling 4.
Withdraw pump coupling from the pump's splined
shaft.
10 Support the weight of the pump flange 2. Remove
four cap screws 7 from the flange and pump. Remove
flange from pump.
11 Remove the four studs 8 from the engine.
2
7
C080180
E-62