Downloaded from www.Manualslib.com manuals search engine 3F-4 WHEELS AND TIRES
Diagnosis
Diagnosis Table
Refer to “Diagnosis Table” in Section 3.
Balancing Wheels
There are two types of wheel and tire balance: static and
dynamic. Static balance, as shown in figure, is equal distribution
of weight around wheel. Wheels that are statically unbalanced
cause bouncing action called tramp. This condition will eventually
cause uneven tire wear.
Dynamic balance, as shown in left figure, is equal distribution of
weight on each side of wheel centerline so that when the tire
spins there is no tendency for the assembly to move from side to
side. Wheels that are dynamically unbalanced may cause
shimmy.
General Balance Procedure
Deposits of mud, etc. must be cleaned from inside of rim.
Tire should be inspected for any damage, then balanced according to equipment manufacturer’s recommenda-
tion.
Off-vehicle balancing
Most electronic off-vehicle balancers are more accurate than on-vehicle spin balancers. They are easy to use
and give a dynamic (two plane) balance. Although they do not correct for drum or disc unbalance as does on-
vehicle spin balancing, this is overcome by their accuracy, usually to within 1/8 ounce.
On-vehicle balancing
On-vehicle balancing methods vary with equipment and tool manufacturers. Be sure to follow each manufac-
turer’s instructions during balancing operation.
1. Heavy spot wheel tramp [A] : Before correction
2. Balance weights addition point [B] : Corrective weights
3. C/L of spindle
1. Heavy spot wheel shimmy [C] : Before correction
2. Balance weights addition point [D] : Corrective weights
3. C/L of spindle
WARNING:
Stones should be removed from tread in order to avoid operator injury during spin balancing and to
obtain good balance.
Downloaded from www.Manualslib.com manuals search engine BRAKES 5-15
Fluid Pressure Test (If Equipped with LSPV)
Test procedure for LSPV assembly is as follows.
Before testing, confirm the following.
Fuel tank is filled with fuel fully.
Vehicle is equipped with spare tire, tools, jack and jack han-
dle.
1) Stop vehicle on level floor and place approximately about
140 kg (309 Ibs) weight on rear housing so that rear axle
weights 600 kg (1323 Ib).
Rear axle weight
“L” : 600 kg (1323 lb)
2) Install special tool to front and rear brake.
Special tool
Front brake
(A) : 09956-02310
(B) : 55473-82030 (Use the air bleeder plug supplied as a
spare part)
Rear brake
(A) : 09956-02310
(B) : 55473-82030 (Use the air bleeder plug supplied as a
spare part)
3) Depress brake pedal gradually till fluid pressure of front
brake becomes as specified below and check corresponding
pressure of rear brake. It should be within specification given
below.
As done above, apply 100 kg/cm
2 pressure to front brake and
check that rear brake pressure is within specification as given
below.NOTE:
Special tool should be connected to bleeder plug hole of
front (driver’s side brake) and rear brakes.
1. Air bleeder plug
2. Weight
3. Attachment
Front brake Rear brake
5000 kPa
50 kg/cm
2
711 psi3800 – 5100 kPa
38 – 51 kg/cm
2
540 – 725 psi
Front brake Rear brake
10000 kPa
100 kg/cm
2
1422 psi5100 – 6500 kPa
51 – 65 kg/cm
2
725 – 924 psi
