PERIODIC MAINTENANCE
3-1
PERIODIC MAINTENANCE
INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments. If
followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a lon-
ger service life and reduce the need for costly overhaul work. This information applies to vehicles al-
ready in service as well as to new vehicles that are being prepared for sale. All service technicians
should be familiar with this entire chapter.
PERIODIC MAINTENANCE CHARTS (YUM1A/YUM2A)
CS - CHECK CA - CHECK AND ADJUST R - REPLACE S - SERVICE CL - CLEAN AND LUBRICATE L - LUBRICATE
Remarks
Daily
Pre-Op-
eration
20 hours
160 km
100 mi
(Every
month)
125 hrs
1000 km
600 mi
(Every 6
months)
250 hrs
2000 km
1200 mi
(Every
year)
500 hrs
4000 km
2500 mi
(Every 2
years)
1000 hrs
8000 km
5000 mi
(Every 4
years)
PRE-OP
Check engine oil CS CS CS
Check engine air cooling inlet
duct
CS CS CS CS CS CS
Check fuel lines for leakage CS CS CS CS CS CS
Check fuel level CSCSCSCSCSCS
Check for looseness and cor-
rosion of battery terminals and
hold downs
CS CS CS CS CS CS
Check brake pedal free play
and adjust if necessary
CS CA CA CA CA CA
Check steering operation CS CS CS CS CS
Check tire pressure, tread
depth, tire surface for damage
CS CA CA CA CA CA
Check body and chassis for
damage
CS CS CS CS CS CS
Check tightness of all bolts,
nuts, screws and rivets
CS CS CS CS CS CS
Check reverse alarm operation CS CS CS CS CS CS
EVERY
MONTH
Check wear of drive belt CS CS CS CS CS
Check operation of Forward /
Reverse shifting
CS CS CS CS CS
Clean / Lube pedal control
area
CL CL CL CL CL
EVERY 6
MONTHS
Wash pre-filter and check air
filter element
SSSS
Check spark plug and plug
cap condition* / Check com-
pression
CS CS CS CS
• Check brake cable operation
• Inspect for abrasions and
damage, and replace if nec-
essary
CS R CS R CS R CS R
Check shock absorbers for oil
leaks and damaged springs
CS CS CS CS
Check fuel hoses for cracks or
damage, and replace if neces-
sary
CS R CS R CS R CS R
* Related to emission control system.
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