Checking and adjusting the tension of the power steering pump and air conditioning compressor drive belt (Mitsubishi Space Star)

Examination

1. Check the belt tension as follows:

Warning: Turn off the ignition before connecting or disconnecting the MUT-II.

Using your hand, gently press the belt between the pulleys at the location indicated by the arrow in Figures 3.5 and 3.6 and check that the belt oscillation frequency matches the nominal value.

Note: For detailed information on measuring the oscillation frequency using the MUT-II, see Chapter "Checking and adjusting the tension of the generator drive belt".

Without using the MUT-II device

Using a special tool for measuring belt tension, check that the tension corresponds to the nominal value (Fig. 3.5, 3 6).

By belt deflection

1. Apply a force of approximately 98 N to the center of the belt branch between the pulleys at the location indicated by the arrow in Figures 3.5 and 3.6 and check that the deflection value corresponds to the nominal value.

Power steering pump and air conditioning compressor drive belt tension:

- when checking:

• oscillation frequency: 137-168 Hz
• tension:392-588 N
• deflection: 9.6-12.4 mm

- when installing a previously used belt:

• oscillation frequency: 145-160 Hz
• tension: 441-539 N
• deflection: 10.2-11.6 mm

- when installing a new belt:

• oscillation frequency: 174-199 Hz
• tension: 637-833 N
• deflection: 7.2-9.0 mm

2. If the measured belt tension and deflection values differ from the nominal values, adjust as follows:

(1) Loosen bolts A, B and C (Fig. 3.7) securing the power steering pump.



(2) Turn adjusting bolt D to adjust the belt deflection.

(3) Tighten power steering pump mounting bolts A, B and C.

Tightening torque:

• bolts A and B: 44 Nm
• bolt C: 49 Nm

(4) Check the belt deflection and tension and readjust the tension if necessary.

Warning: The check is carried out after turning the crankshaft one revolution clockwise.