Multiquip HPHA36C5H - Manual (Page 33)

HPHA36C5H WALK-BEHIND TROWEL — OPERATION AND PARTS MANUAL — REV. #3 (07/06/10) — PAGE 33
HPHA36C5H TROWEL — MAINTENANCE
6. Once the correct adjustment is made, tighten the lock nut on
the trowel arm to lock in place.
7. Loosen locking nuts on the adjustment fixture, and remove
trowel arm.
8. Repeat steps for the remaining trowel arms.
Re-Assembly
1. Clean and examine the upper/lower wear plates and thrust
collar. Examine the entire spider assembly. Wire brush any
concrete or rust build-up. If any of the spider components are
found to be damaged or out of round, replace them.
2. Make sure that the bronze trowel arm bushing is not damage
or out of round. Clean the bushing if necessary. If the bronze
bushing is damage or worn, replace it.
3. Reinstall bronze bushing onto trowel arm.
4. Repeat steps 2 -3 for each trowel arm.
5. Make sure that the spring tensioner is in the correct position
to exert tension on the trowel arm.
6. Insert all trowel arms with levers into spider plate (with bronze
bushing already installed) using care to align grease hole on
bronze bushing with grease hole fitting on spider plate.
7. Lock trowel arms in place by tightening the hex head zerk
grease fitting and jam nut.
8. Re-install the blades back onto the trowel arms.
9. Install stabilizer ring onto spider assembly.
Figure 46. Trowel Arm Adjustment Setup
Figure 47. Trowel Arm Adjustment Fixture Components
3. Unscrew the locking bolts on the adjustment tool and place
the trowel arm into the fixture channel as shown in Figure 47.
A thin shim may be required to cover the blade holes on the
trowel arm. Make sure to align the trowel adjustment bolt with
the fixture adjustment bolt.
4. Use an allen wrench to tighten the locking bolts securing the
trowel arm in place.
5. Loosen the locking nut on the trowel arm lever, then turn the
trowel arm adjusting bolt until it barely touches (.010") the
fixture adjusting bolt.
10. Reinstall lower wear plate, thrust collar and upper wear
ring in the reverse order that they were dis-assembled onto
the spider shaft. Make sure that there is little or no lateral
movement between the thrust collar and the spider shaft.
11. Carefully lift the upper trowel assembly , line up the key-
way on gear box main shaft and insert into spider assembly.
12. Reinstall square head cone point into spider plate and
tighten in place. Tighten jam nut. Use care in making sure
point of set screw engages groove in gear box main shaft.
13. Lubricate all grease points (zerk fittings) with premium
" Lithum 12" based grease, conforming to NLG1 Grade #2
consistency.