Allen Engineering Corporation 048986, Operations & Parts Manual

Page: 50 / 124

3-12
SECTION 3
SERVICE
049151; 07/08
33..66
LLiifftt LLeevveerr A Addjjuussttm meenntt
3.6 Lift Lever Adjustment Procedure
Damage to and/or replacement of a trowel arm can change the adjustment of the lift
lever. This can unbalance the trowel arms and cause the riding trowel to wobble
during operation. To operate smoothly the lift lever on all trowel arms must be
adjusted the same to ensure that the riding trowel is balanced correctly.
Adjusting the trowel arms is accomplished by using the optional trowel arm alignment
jig AEC PN 016863. The service manual that is included with the alignment jig
describes in detail the steps to preform this procedure and to check the flatness and
straightness of the trowel arms.
The steps below descride the general procedure to remove the trowel arms to be
aligned.
Make sure that there is no pitch in the blades
before attempting to remove a trowel arm.
1) Block up pressure plate [A] using a wooden block.
2) Remove stabilizer ring from spider assembly.
3) Remove blades from trowel arms.
4) Loosen hex head cap screw [B] and remove it and the external star washer
from the spider boss.
5) Remove trowel arms from spider boss with lift levers in place.
6) Clean flats on trowel arm before placing it in the trowel arm jig (PN 016863).
7) Preform the alignment procedures as outlined in the alignment jig service
manual (PN 047427).
8) Re-attach trowel arm to spider boss and blades to trowel arms.
9) Tighten down hex head cap screw to secure trowel arm in place.
10) Reattach stabilizer ring (only on available models).