4.3.3. Adjustment and tension removal поликлинового a belt
The poliklinovoj belt stretches the mechanism with the built in spring, therefore to check a belt tension it is not required. To spend a belt tension it is required only in the event that the belt for any reason should be removed.
For a tension various devices are used. One execution is equipped by a tension roller, another — is not present. At dismantle and belt installation for this reason there are distinctions.
Remennyj drive without a tension roller
For removal поликлинового a belt it is necessary следать the following:
- To dismantle поликлиновой a belt for the steering mechanism with the amplifier, if it is established (see corresponding подразд.);
- To note a direction of rotation of a belt if it is established again. For this purpose a felt-tip pen to put on a belt an arrow specifying a direction of rotation. The direction of rotation of a cranked shaft if to take a detached view a pulley, right (clockwise);
- To turn away 103
bolts of 1 fastening of the generator specified in fig.
and 2 fastenings of coupling collars;
Fig. 103. The tool for a tension поликлинового a belt: 1, 2 — bolts, 25 Нм
- To wring out downwards the generator by means of 103
special tools specified in fig.
or an assembly shovel against a spring tension, to weaken a belt tension. On fig. 104
it is shown how to establish on the generator the tool in the collected kind;
Fig. 104. Tool installation on the generator
- To take away a mudguard downwards and to remove a belt.
Belt immediately to subject дефектовке on presence:
- Cracks or breaks;
- отслоения an integumentary layer or working surfaces of a belt;
- Deterioration of working surfaces;
- The worn out or brilliant edges;
- Oil or greasing traces.
Always it is necessary to replace the damaged belt.
At installation and belt adjustment to operate as follows:
- To establish a belt on pulleys of a cranked shaft and the generator. At installation of a former belt to observe marks of a direction of rotation. Installation against an initial direction of rotation raises deterioration of a belt and even can serve as the reason of its rupture;
- The generator to take away at least three times against the stop downwards to provide ease of its course;
- To wring out downwards the generator by means of the specified special tool and to establish a belt on a generator pulley;
- To start up the engine and to allow to it to work not less than 10 with idling. Thus the belt stretches a spring. Generator bolts remain weakened. If to pull a belt at the dismantled engine it is necessary to turn a cranked shaft not less than on 10 turns also at the weakened bolts of the generator;
- To tighten 103
bolts specified in fig.
1 and 2 moment 25 Нм
. To tighten at first a bolt 2, and then a bolt 1. At a tightening of bolts it is impossible to render any pressure upon the generator or to press hands the tense belt;
- To establish and pull a belt of the pump of the amplifier of a steering (the separate section see). To establish a guard and other details.
Remennyj drive with a tension roller
Fig. 105. Installation приводного a belt by means of a tension roller at the established amplifier of a steering: 1 — ременный a pulley, a cranked shaft; 2 — клиновой a ridge belt; 3 — ременный a pulley, the pump of the amplifier of a steering; 4 — ременный a pulley, the generator; 5 — a tension roller
Fig. 106. Installation of a belt by means of a tension roller at the amplifier of a steering and installation of a central air of air: 1 — a pulley of a cranked shaft; 2 — a belt; 3 — a pulley of the pump of the amplifier of a steering; 4 — ременный a compressor pulley; 5 — a generator pulley; 6 — a tension roller
Fig. 107. Easing of a tension of a belt at the established tension roller with a separate drive for the pump of the amplifier of a steering
Both belt drives are presented on fig. 105
. On fig. 107
it is possible to see, how the belt if the pump of the amplifier of a steering is put in action individual клиновым
by a belt is established. Here for a tension the special lever is again used to turn a tension roller for a belt tension.
For removal поликлинового a belt it is necessary to execute the following:
- To dismantle клиновой a belt of the pump of the amplifier of a steering;
- To note a rotation direction поликлинового a belt. For this purpose to put a felt-tip pen or a marker an arrow specifying towards a direction of rotation;
- To take away a tension roller by means of lever VW 3299. The lever, as is shown in fig. 107
, is inserted into a roller and moves in a direction noted by an arrow. Thus from a belt the tension acts in film;
- To take away a guard of a belt drive downwards and to remove поликлиновой a belt;
- To check up a belt condition in the way described above;
- To establish поликлиновой a belt. For this purpose to lift by means of the lever a tension roller and to establish a belt on a tension roller and a generator pulley. At repeated installation of a former belt it is necessary to observe noted direction of rotation. Then to release a tension roller and to pull a belt;
- To press a guard of a belt drive by means of spring clips.