Parker HAUSER HPLA Series, User Manual

Page: 41 / 55

PLEASE NOTE: THIS IS HAUSER GERMANY MANUAL.
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Mounting / Repair
41
5.8.1.1 Pulley with bearings on a hollow shaft (1a, 1b and 1c)
1. Slacken the timing belt: Remove the dust cover (63) of the
tensioning station. Loosen the lock-nut (53). Loosen the
tensioning screws (51) by approximately 10 turns.
2. When with a dual actuator, first support the
coupling if necessary.
3. Depending on the size and weight of the
drive, remove the motor and gearbox.
095 093 087 086 088 091 090
098
099 096
097
115
116 112
113 111 081
101
102
103
085
106
Drawn with
an offset
Key
drilled
4. If necessary, unfasten shrink-fit washer (106) and remove
from hollow shaft.
5. Unfasten screws (96) of intermediate flange and carefully take off flange (95) together with
hollow shaft (85), bearings (90) and pulley (87).
6. Remove bearing (90). To do this, use special pliers to remove retaining rings (91).
7. Take off pulley (87). To do this, first unscrew threaded pin (88)
8. Check shaft key for damage and change if necessary
9. Insert new pulley, drill key and fix with threaded pin
10. For assembly, proceed in reverse order - during assembly, slightly tighten screws of shrink-
fit washer and then tighten to tightening torque Ma one after another and in small stages
(1/4 revolution) (for tightening torque values, see
Table 13 , page 42).
5.8.1.2 Pulley with bearings directly on shaft (2)
1. Slacken the timing belt: Remove the dust cover (63) of the
tensioning station. Loosen the lock-nut (53).
Loosen the tensioning screws (51) by approximately 10
turns.
2. When with a dual actuator,
first support the coupling if
necessary.
115
116
096
097
112
113 111
081
089
094 087 088 095
Key drilled
S
SR
3. Unfasten clamping screws S of both adjustment rings of
the PME bearings
4. Unfasten adjustment rings SR of both PME bearings (95)
by turning in clockwise direction
5. Unfasten retaining screws (96) of flange (94) and carefully
take off the flange.
6. Pull shaft and pulley (87) out of drive housing. When with
dual actuators, first unfasten threaded pin of coupling.
7. Use shim rings (89) to pull off pulley (87). To do this, first unscrew threaded pin (88) .
8. Check shaft key for damage and change if necessary
9. Insert new pulley, drill key and fix with threaded pin
10. For assembly, proceed in reverse order. Ensure that the pulley is again precisely located in
the centre of the housing. This is ensured when the shim rings (89) are used.
5.8.1.3 Pulley fitted directly on the gearbox shaft
For more information, see chapter 5.7, page 39.