Bad Boy 1025H - CHARGE PUMP PRESSURE TEST

B25W-202010
4
-
21
CHAPTER 4 HST SYSTEM1025H TRACTOR
4
F
R
C
K19W098A
4. Cycle all controls to relieve any pressure that may
be in the hydraulic system.
5. Underneath the seat bracket, at the front of
the tunnel, locate the hydrostatic transmission,
Remove the plug in the charge pressure test port.
6. Assembled test equipment as shown and install to
test port.
7. Start engine and run at high idle (2,000~3,000rpm)
8. Check pressure reading gauge.
Charge pressure should reach 8 ~ 10 kgf/cm
2
(113
~ 142 psi). Can not be obtained ; the mesh inlet lter
may be restricted, the suction line may be restricted or
leaking air, or front hydraulic pump may be defective.
8 ~ 10 kgf/cm
2
, at neutral position or reverse position
with 220 kgf/cm
2
.
RESULTS
SPECIFICATIONS
CHARGE PRESSURE
7.3 CHARGE PUMP PRESSURE TEST
To ensure that charge pump is operating at specied
pressure to supply oil to hydrostatic pump.
REASON
EQUIPMENT
K19W097A
1. Park tractor on a level surface and set park brake.
2. Turn key switch to OFF position.
3. Shift transmission to NEUTRAL.
PROCEDURE
IMPORTANT
• Make sure to relieve system pressure before
loosening any system lines or hoses.
At the Pc port