UD TRUCK MAINTENANCE SCHEDULE
LIGHT DUTY

Abbreviations:

R = Replace RB = Rebuild A=Adjust C = Cleaning L = Lubricate

T= Tighten to specified torque E = Emission Control System Maintenance I = Inspect. Correct, adjust or replace if necessary. [ ] = Initial Maintenance. Items indicated by an asterisks (*) should only be performed by UD dealer.

	Miles x 1000	1	5	10	15	20
	Kilometers x 1000	1.6	8	16	24	32
	Months	1	3	6	9	8
BASIC MECHANICAL SYSTEM
*Cylinder head bolts						I
E *Valve clearance						A
E *Intake manifold				I		I
*Exhaust manifold				I		I
Drive belts: *R: Every 60,000 miles		[ I ]		I		I
COOLING SYSTEM
*Water pump						I
Cooling Fan and Shroud						I
*Thermostat						I
FUEL SYSTEM
E Governor setting (checking seals)		I: Every 50,000 Miles
E *Injection pump timing		I: Every 50,000 Miles
E *Idle speed		[ I ]	I: Every 50,000 Miles
E *Nozzle (injector tip)		C: Every 50,000 Miles
E *Nozzle holder (injector)		RB: Every 150,000 Miles
Fuel tubing				I		I
E Main & primary fuel filters (One filter on FD engine)				R		R
LUBRICATION SYSTEM
Engine oil tubing (hose and clamp)		[ I ]
INTAKE AND EXHAUST SYSTEM
E Air cleaner element			I	I	I	R
E Air intake system (Duct, hose & clamp)						I
Exhaust tubing and muffler		I: Every 50,000 Miles
E *Turbocharger		C: Every 100,000 Miles
OTHER
*Alternator						I
*Starting motor						I
CLUTCH
Clutch pedal free play and operation		[ I ]	I	I	I	I
*Clutch disc			I	I	I	I
*Clutch piping			I	I	I	I
MANUAL TRANSMISSION
Manual transmission gear oil			I	I	I	R
AUTOMATIC TRANSMISSION
ATM Fluid - R: Every 25,000 miles			I	I	I	I
On-Highway: Change fluid every 25,000 miles (40,000 km) or 12 months, whichever first occurs. Change internal sump oil filter at each fluid change. Change external oil filter at first 5,000 miles (8,000 km), thereafter at each fluid change.
PROPELLER SHAFT
*Universal joint		[ I ]	I	I	I	I
*Center bearing		[ I ]	I	I	I	I
*Condition of propeller shaft		[ I ]	I	I	I	I
STEERING SYSTEM
*Gear box		[ I ]	I	I	I	I
Steering wheel free play				I		I
*Steering linkage		[ I ]	I	I	I	I
*Steering fluid piping			I	I	I	I
AXLE AND WHEEL
*Front axle (I-beam)		[ I ]	I	I	I	I
*Rear axle housing		[ I ]	I	I	I	I
Wheel nut (Refer to note)		[ T ]	T	T	T	T
NOTE: This procedure also applies whenever a tire is changed
BRAKE SYSTEM
*Check valve		I: Every 20,000
*Brake piping						I
*Brake hose		R: Every 12 months
*Wheel cylinder repair kit		R: Every 12 months
*Master cylinder repair kit		R: Every 12 months
*Brake lining clearance			I	I	I	I
*Brake lining			I	I	I	I
*Brake drum				I		I
*Parking brake lining clearance				I		I
*Parking brake lining				I		I
*Parking brake drum				I		I
*Parking brake lever stroke		[ I ]	I	I	I	I
SUSPENSION
Leaf spring		[ I ]	I	I	I	I
Shock absorber		[ I ]	I	I	I	I
*U-bolt and nut		[ I ]	I	I	I	I
ELECTRICAL SYSTEM
Battery electrolyte level					I	I
Battery terminal			I	I	I	I
Specific gravity of electrolyte					I	I
OTHER
Tire and wheel rotation			Rotate	Rotate	Rotate	Rotate
ENGINE
E Oil and full flow type oil filters (TD42T/TA engine )			R	R	R	R
E Oil and bypass type oil filters (TD42T/TA engine)				R		R
E Oil and oil filters (FD42TA engine)				R		R
Oil and oil filters for '94MY and older		Refer to owners manual
CHASSIS
Power steering system fluid			I	I	I	R
Differential  gear oil			I	I	I	R
*Front wheel bearing grease						R
Brake fluid			I	I	I	R*
Grease lubrication points			L	L	L	L
		* Also serves as clutch fluid
NOTES:
During periods of severe service operation or frequent stop-and-go operation, more frequent inspections of the brake system should be performed. Mechanical driveline parking brake. Spring-activated rear wheel parking brake. Under the following severe operating conditions, more frequent servicing will be required. Operation at extremely low or high ambient temperature. Operation in heavy dust conditions. Extended high speed operation with vehicle fully- loaded to its GVWR. Extended low speed operation. Frequent stop-and-go operation. Any replacement parts used for required maintenance service or repairs should be genuine UD parts.