1
Part I Engine
Chapter 1 Engine Assembly
(MR479Q, MR479QA, MR481QA)
Section 1 Routine Inspection
1. Check coolant
2. Check engine oil
3. Check battery
4. Check air cleaner element assembly
5. Check spark plug
6. Check drive belt
Figure 1
Notice:
z
Check the belt deflection at the specified point See (Figure 1).
z Set tension to specified value when installing new belt.
z Check the deflection to ensure it is below the specified value after the belt runs for over 5 minutes.
z Reinstall the belt which has been running for over 5 minutes. The deflection of the old belt is regarded as
the standard for inspection.
z Check V-belt for tension and distortion after the engine cranks for 2
turns.
7. Check ignition timing See (Figure 2)
a) Warm up the engine.
b) When using fault diagnosis tester
Connect fault diagnosis tester to fault diagnosis interface socket.
Ignition timing:
MR479Q: 10 ± 2° BTDC (before top dead center) at idle
MR479QA: 10 ± 2° BTDC at idle
MR481QA: 10 ± 2° BTDC at idle
Figure 2
New Belt mm Old Belt mm
Fan Belt 7
~
13.5
Power steering Belt 5
~
66
~
8
A/C Belt 6. 5
~
78
~
9
Belt deflection See (Table 1)
Belt pressure: 98N
Belt Looseness
Measuring Point
Water pump
Power steering
crankshaft
generator
Air condition
compressor
pump
11.5
~
9