2004 ISUZU TF SERIES Workshop Manual

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Page 3769 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE) 7A3-13

Measure Stall Speed
1. Chock the four wheels.
2. Mount an engine tachometer.
3. Fully apply the parking brake.
4. Step down strongly on the b

Page 3770 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-14 ON-VEHICLE SERVICE (AW30 –40LE)

Measure Time Lag
1. Fully apply the parking brake.
2. Start the engine. Check idling speed (A/C OFF).
3. Shift the shift lever from “N" to

Page 3771 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE) 7A3-15

Measure Line Pressure
1. Fully apply the parking brake and chock the four
wheels.
2. Start the engine and check idling rpm.
3. Shift into “D" r

Page 3772 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-16 ON-VEHICLE SERVICE (AW30 –40LE)

Evaluation
i. If there is no 1
2 upshift:

Solenoid S2 is stuck
1 –2 shift valve is stuck
ii. If there is no 2
3 upshift:

Page 3773 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE) 7A3-17

Evaluation
i. If there is no engine braking effect in the “2" range:

Second coast (No.1) brake is defective.

ii. If there is no engine br

Page 3774 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-18 ON-VEHICLE SERVICE (AW30 –40LE)

“ L" Range Test
1. While running above 80 km/h (50 mph) in the “D"
range, release your foot from the accelerator pedal
and shift into the �

Page 3775 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE) 7A3-19

Shift Point Chart and Lock-Up Point Chart
Shift Point Chart
(H2, H4)
(REAR AXLE RATIO: 4.555)
(RADIUS OF TIRE: 0.350m)
“ NORMAL" mode
Up shift

ON-VEHICLE SERVICE (AW30 –40LE) 7A3-19

Shift Point Chart and Lock-Up Point Chart
Shift Point Chart
(H2, H4)
(REAR AXLE RATIO: 4.555)
(RADIUS OF TIRE: 0.350m)
“ NORMAL" mode
Up shift
km/h (mph)

Range Throttle Opening 1

2 2

3 3

4
Fully opened 48 – 54 (30 – 34) 104 – 110 (65 – 68) 177 – 183 (110 – 114)D
Half throttle 32 – 38 (20 – 24) 59 – 65 (37 – 40) 114 – 120 (71 – 75)
Fully opened 48 – 54 (30 – 34) 104 – 110 (65 – 68) — 3
Half throttle 32 – 38 (20 – 24) 59 – 65 (37 – 40) —
Fully opened 48 – 54 (30 – 34) — — 2
Half throttle 32 – 38 (20 – 24) — —

Down shift km/h (mph)

Range Throttle Opening 1

2 2

3 3

4
Fully opened 37
– 43 (23 – 27) 94 – 100 (58 – 62) 155 – 161(96 – 100)
Half throttle 15 – 21 (9 – 13) 33 – 39 (21 – 24) 65 – 71 (40 – 44) D
Fully closed 9 – 15 (6 – 9) 20 – 26 (12 – 16) 39 – 45 (24 – 28)
Fully opened 37 – 43 (23 – 27) 94 – 100 (58 – 62) —
Half throttle 15 – 21 (9 – 13) 33 – 39 (21 – 24) — 3
Fully closed 9 – 15 (6 – 9) 20 – 26 (12 – 16) —
Fully opened 37 – 43 (23 – 27) 94 – 100 (58 – 62) —
Half throttle 15 – 21 (9 – 13) 94 – 100 (58 – 62) — 2
Fully closed 9 – 15 (6 – 9) 94 – 100 (58 – 62) —
L — 37 – 43 (23 – 27) — —
“ POWER" mode
Up shift
km/h (mph)

Range Throttle Opening 1

2 2

3 3

4
Fully opened 48 – 54 (30 – 34) 104 – 110 (65 – 68) 177 – 183 (110 – 114)D
Half throttle 38 – 44 (24 – 27) 74 – 80 (46 – 50) 128 – 134 (80 – 83)
Fully opened 48 – 54 (30 – 34) 104 – 110 (65 – 68) — 3
Half throttle 38 – 44 (24 – 27) 74 – 80 (46 – 50) —
Fully opened 48 – 54 (30 – 34) — — 2
Half throttle 38 – 44 (24 – 27) — —

Page 3776 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-20 ON-VEHICLE SERVICE (AW30 –40LE)

Down shift km/h (mph)

Range Throttle Opening 1

2 2

3 3

4
Fully opened 39
– 45 (24 – 28) 94 – 10

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