5-10t Internal Combustion Counterbalance Forklift Truck Operation & Maintenance Manual
-89-
(5)Disassembly and Assembly (Refer to Fig 6-5.)
a. Sequence of Disassembly: Front Cover – Retainer ring – Slip Ring – Valve Sleeve, etc –
(Gasket – Poking Pin – Valve Core – Leaf Spring) – Rear Cover – Limit Column – Stator – Rotor
– Universal Driving Shaft – Turnbuckle – Steel Ball – Valve Body
As in the case when disassembly begins with rear cover, the steel ball must be taken out firstly,
before the valve core and valve sleeve, etc are extracted, and otherwise it is liable to block and
damage the valve body. Moreover, attention shall be paid not to bruise or scuff the other end face
of valve body, when front cover is detached.
b. Sequence of Assembly
Valve Core – Leaf Spring – Valve Sleeve – Poking Pin – Valve Body – Slip Ring – Retainer Ring
– Front Cover – Steel Ball – Turnbuckle – Separation Disc – Universal Driving Shaft – Rotor –
Stator – Limit Column – Rear Cover
6.1.5 Failure and Removal for Steering Unit: Refer to Table 6-2.
Table 6-2
Failure
Cause of Generation
Effect
Removal Method
Dirt Present on Bonding
Face
Oil Leak with Valve Body,
Separation Disc, Rotor, and
Rear Cover Bonding Face
To be re-cleaned
Rubber Ring in Shaft
Radial Place Damaged,
Leading to Oil Leak
Rubber ring to be replaced
Oil Leak
Unsmooth Washer in the
Place of Limit Bolt,
Leading to Oil Leak
Washer to be grinded smooth or to
be replaced
Oil Supply for Oil Pump
Insufficient
Light for Slow Turn of
Steering Wheel, while Heavy
for Quick Turn of Steering
Wheel
Proper oil pump to be selected or
bypass valve of oil pump to be
examined as to whether or not it is
under normal condition
Air Present in Steering
System
Foam Present in Oil, Giving
out Irregular Sound, Steering
Wheel Rotates, But Cylinder
Stays Still Sometimes
Air in the system to be discharged,
and oil suction pipeline to be
examined
Oil Tank not Full
Oil to be added to the specified level
height
Viscosity of Oil Liquid
too Thick
Oil liquid of recommended viscosity
to be used
Steel Ball One-way
Valve inside Valve Body
Invalid
Steering Wheel Heavy for Both
Quick Turn and Slow Turn,
and Steering without Pressure
Φ8 steel ball to be loaded, if lost,
and steel ball to be cleaned if
blocked with dirt
Steering
Heavy
Pressure of Bypass Valve
Lower than Working
Pressure or Bypass Valve
Blocked with Dirt
Light Steering for No Load (or
Light Load), while Steering
Heavy with Increased Load
Pressure of bypass valve to be
adjusted or bypass valve to be
cleaned
Summary of Contents for FD100T
Page 12: ...5 10t Internal Combustion Counterbalance Forklift Truck Operation Maintenance Manual 12 ...
Page 15: ...5 10t Internal Combustion Counterbalance Forklift Truck Operation Maintenance Manual 15 ...
Page 63: ...5 10t Internal Combustion Counterbalance Forklift Truck Operation Maintenance Manual 63 ...
Page 65: ...5 10t Internal Combustion Counterbalance Forklift Truck Operation Maintenance Manual 65 ...
