BRAKES 5-17
Secondary master
cylinder fluid
pressure
(4) When the front brake system fails.
W hen there is a failure in the front brake system, the fluid
pressure from the front master cylinder decreases.
As a result, the balance between the front and rear brake
side fluid pressures are lost at the control valve sleeve so
that the control valve sleeve moves upwards.
The control valve sleeve strikes against the piston, thereby
pushing the piston upwards.
Accordingly, the fluid pressure of the rear mater cylinder is
not decreased and is applied directly to the rear wheel
cylinder to secure a sufficient braking performance of the
rear brakes. (See the left figure.)
Valve Maintenance
In the case of fluid lead or other a abnormalities, faulty valve
should be replaced.
Note:
The load sensing proportioning valve is not repairable and
must be replaced as a completed assembly.
ADJUSTMENT PROCEDURE OF LSPV
This adjustment should be performed with the battery voltage
applied to the valve.
1. Adjust the rear axle weight by loading the rear body as
necessary.
Rear axle weight kg (lbs)
TFR 750(1.654)
TFS 900(1.985)
Note:
The rear axle weight should be adjusted to the specified
value with a man seated in the driver seat.
7C-34 CLUTCH
Inspection and Repair
Make the necessary adjustments, repair, and part
replacements if excessive wear or damage is
discovered during inspection.
Cylinder Body
1. Clean the cylinder body.
2. Check the fluid return port for restrictions and clean
it if necessary.
Inner Parts
1. Visually inspect the disassembled parts for
excessive wear and damage.
Replace the inner parts with new parts shown in the
illustration.
2. Measure the clearance between master cylinder
wall and piston.
If the measured value exceeds the specified limit,
the master cylinder assembly must be replaced.
Standard: 0.07 mm (0.0028 in)
Limit: 0.15 mm (0.0059 in)
Reassembly
To reassemble, follow the disassembly steps in the
reverse order, noting the following points:
Cylinder Body
Immerse the cylinder body in clean brake fluid.
Piston Assembly
Before installing, apply a thin coat of rubber grease to
the piston. Install cup in groove in piston with lip turned
to front of cylinder. Use care to prevent damaging the
lip of the piston seat.
