Isuzu Truper - Isuzu Trooper
1. The maintenance instruction
2. Maintenance service
3. Engines
   3.1. Specifications of the engine and adjusting works
      3.1.1. Spark plugs
      3.1.2. Ignition installation
      3.1.3. Installation of the moment of injection of fuel
      3.1.4. Electronic ignition
      3.1.5. Adjustment of backlashes of valves
      3.1.6. Adjustment of turns of idling on carburettor engines
      3.1.7. Adjustment of turns of idling on engines with injection system
      3.1.8. Adjustment of turns of idling on diesel engines
   3.2. An electric equipment and major repairs of engines
   3.3. The diesel engine of 2,8 litres
4. System of decrease in toxicity
5. Fuel system
6. Transmission and a running gear
7. A suspension bracket and a steering
8. Brake system
9. A body
10. A body electric equipment
11. Diagnostics of malfunctions
12. Electroschemes





Isuzu Trooper>> Engines>> Specifications of the engine and adjusting works>> Adjustment of backlashes of valves

3.1.5. Adjustment of backlashes of valves
THE GENERAL DATA

The prevention

Valves are regulated on the cold engine. It is forbidden to reduce backlashes of valves against norm, the small increase in backlashes is supposed only.


ADJUSTMENT OF BACKLASHES ON 4-CYLINDER ENGINES

PERFORMANCE ORDER
1. Uncover heads of cylinders.
2. Be convinced that the head of cylinders and cam-shaft bolts are tightened with the set moments.
3. Expose the piston of 1st cylinder in ВМТ a compression step (it is defined on compression increase at closing by a finger of an aperture for a candle), having combined a label on a pulley коленвала with the index.
4. Adjust a backlash in the sequence specified in applied tables.
5. For backlash adjustment release a counternut and rotate an adjusting bolt. After exhibiting of the necessary backlash (щуп should move between a cam of a cam-shaft and a valve core under small effort) tighten a counternut.
6. Expose in ВМТ a step of compression the piston of 4th cylinder for what turn коленвал on 360 .
7. Upon termination of adjustment establish a cover, having replaced a lining and having greased with its hermetic.

For petrol engines

Cylinder number
1
2
3
4
The inlet
*
*
**
**
The final
*
**
*
**

* – It is regulated, when in ВМТ a compression step there is a piston of 1st cylinder;
** – It is regulated, when in ВМТ a compression step there is a piston of 4th cylinder.

For diesel engine С223

Cylinder number
1
2
3
4
Valves
E
I
I
E
E
I
I
E
Stage 1
*
*
*
*
Stage 2
**
**
**
**

I – inlet, E – final

ADJUSTMENT OF BACKLASHES ON 6-CYLINDER ENGINES

Adjustment of backlashes on the 6-cylinder engine (V6)


PERFORMANCE ORDER
1. Uncover heads of cylinders (subsection 3.1.3 see).
2. Expose the piston of 1st cylinder in ВМТ a compression step (risk on a pulley коленвала it should be combined with a label "0", коромысла 1st cylinder cannot freely move).
3. Adjust backlashes in following valves:
      – The final: 1, 2 and 3rd cylinders.
      – The inlet: 1, 5 and 6th cylinders.
4. Release an adjusting nut until then while it is felt люфт.
5. Wrap an adjusting nut until люфт will not disappear. Tighten a nut on one and a half turn for pusher centering.
6. Turn коленвал on 1 turn and again combine to risk on a pulley коленвала with a label "0" (the piston of 4th cylinder is thus exposed in ВМТ a compression step).
7. Adjust backlashes in following valves:
      – The final: 4, 5 and 6th cylinders.
      – The inlet: 2, 3 and 4th cylinders.
8. Release an adjusting nut until it is felt люфт.
9. Wrap an adjusting nut to those, a time while люфт will not disappear. Tighten a nut on one and a half turn for pusher centering.
10. Upon termination of adjustment establish a cover, having changed a lining and having greased with its hermetic.