Loader Circuit Flow Testing - Toro TX525 Service Manual

HYDRAULIC TESTING

Loader Circuit Flow Testing

This test determines the flow output of the gear pump.
The components involved in this test are: hydraulic
line and pump. If the gear pump flow test meets speci-
fications, then the loader valve or hydraulic line may be
at fault.
1. Cycle the hydraulic oil until warm.
2. Park the unit on level ground.
3. Set the park brake.
4. Cycle the loader valve to relieve any pressure from
the circuit.
Note: One hydraulic fitting adaptor needs to be
purchased at a local hydraulic supplier.
(Parker part number 8HLO = 13/16-16 ORFS x
13/16-16 ORFS)
5. Remove the rear access panel.
6. Place absorbent towels(s) below hydraulic pump.
7. Using a 15/16" wrench, disconnect the hydraulic
hose from the pump fitting (Fig. 1852).
9-8
Fig 1852 PICT-3403
8. Thread a flow meter hydraulic hose to the hydraulic
pump fitting and tighten with a 15/16" wrench (Fig.
1853).
9. Thread the adaptor fitting to the other flow meter
hydraulic hose. Tighten using a 15/16" wrench
on the lfow meter hose and a 7/8" wrench on the
adaptor fitting (Fig. 1854).
Rev. 000
Fig 1853
PICT-3404
Fig 1854 PICT-3405
TX525 Service Manual