Ingersoll-Rand FA2A, Parts, Operation And Maintenance Manual

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d. Install washer (128) and springs (124) and (127).
DANGER
• Springs (124) and (127) exert a considerable force on cover
(125) when assembled . Extreme care must be taken when
assembling and installing cover (125) and retainer ring (126).
e. Using a press, slowly compress cover (125) and
springs until the retainer ring groove is accessible.
Install retainer ring (126). To ensure that retainer ring
is properly installed, tap the end of the retainer ring
with a punch until the entire retainer ring rotates in
brake cylinder groove. Slowly release press and ensure
retainer ring securely holds cover in place.
2. If not accomplished during ‘Winch Assembly’ steps, install
bracket (106) to inside of motor end upright (68) and
secure in place using capscrews (107) and (112). Torque
capscrews to 85 ft lbs (115 Nm).
3. Assemble roller (116) in plunger (114) and secure using
dowel pin (115). Heavily coat the plunger assembly with
“LubriPlate” MO-LITH No. 2 or equivalent lubricant.
Install spring (113) and plunger assembly in brake bracket
(106). Align groove in plunger towards hole in motor end
(68) upright.
4. Align cylinder rod roller surface to groove in plunger. Turn
cylinder (121) clockwise until snug. Adjust cylinder (121)
such that the air hose connection port is horizontal and
towards the motor.
Conduct the following when the winch is assembled, but
prior to mounting to the foundation. The motor end of the
winch should be raised enough to allow access to the brake
components located on the inside surface of the inboard
(motor end) upright (68).
5. Place spacer (105) between upper brake band flange and
bracket. Attach band assembly (104) to bracket (106) using
three capscrews (101), spacers (102) and spacer tubes
(103). Torque capscrews to 55 ft lbs (75 Nm).
6. Install pivot bar (119) and capscrew (120) through lower
flange of brake band assembly (104). At lowest point of
threads, place a bead of Loctite
®
680 and install jam nut
(117) fully. Jam nut threads must become coated with
sealant. Install second jam nut (117) to approximately the
middle of the thread length. Thread capscrew (120) into
bottom of plunger (114) a minimum of five thread lengths.
Lock in place, against plunger, using jam nut (117). Adjust
brake as described in the ‘Drum Band Brake Adjustment’
section.
Adjusting Automatic Drum Band Brake
Optional Feature. Refer to Dwg. MHP1281.
CAUTION
• This adjustment is done after a rebuild. It is only a rough
adjustment intended to remove major slack prior to
adjusting with a load.
This procedure can be done at a work bench using a 50 psig air
supply applied to the brake cylinder. After completion of this
procedure the brake must further be adjusted using the
recommended air supply and a test load.
1. Insert a length of 3/8 inch NC threaded rod, fully into the
cylinder rod (108). With the brake band slack and no air
supplied to the brake, push the end of the threaded rod to
position the plunger all the way inside the brake bracket
(106). Place a nut on the threaded rod, and locate nut until
it is just touching the cover (125). Apply air to the brake.
The threaded rod should move out from the cylinder
approximately 1 inch (25 mm).
2. Tighten capscrew (120) in plunger (114) to remove slack
from band brake. Release air pressure. The nut should
move closer to the end cover (125) and stop.
3. Repeat step 1 until the nut stops at approximately 9/16 inch
(14 mm) from the cover (125).
4. Refer to further adjusting in ‘Automatic Drum Brake
Adjustment’.
Freespool Assembly
Optional feature. Refer to Dwg. MHP1321.
1.
Apply Loctite
®
609 to dowel pin (551) and install into end
of shifter (512).
2. For steps 3 through 5, it is recommended that the shifter
(512) be secured using a vise. Care should be taken to
ensure shifter is not damaged by the vise. Use leather or
copper-covered vise jaws to prevent scoring. Locate shifter
in vise with dowel pin placed at bottom.
3. Lubricate spring (552) with grease and place into shifter.
Locate latch (553) on end of spring.
4. Slide dentent plate (510) onto shifter and seat against raised
edge of shifter.
5. Place base of handle (509) into shifter slot. Using handle,
push against latch to compress spring until hole in handle
base and hole in shifter slot are aligned. Press dowel pin
(508) in hole on one side of shifter slot, through handle and
into hole in other side of shifter slot. Center the dowel pin.
Remove assembly from vise.
6. With output shaft (28) installed in winch upright, attach
shaft support (505) to output shaft with capscrews (504).
Tighten capscrews.
7. Lightly lubricate shaft support mating surface.
8. Lubricate ‘O’ ring (404) and install into groove in housing
(503) shifter port.
9. Fully slide housing over lubricated mating surface of shaft
support.
10. Install shifter assembly into shifter port on housing with
handle pointing down. Do not force assembly completely. It
is necessary to align the dowel pin to shaft support groove.
To do this slide housing with shifter assembly in and out on
shifter shaft as necessary, while pressing on shifter
assembly until dowel pin slips into support shaft groove.
11. Install capscrews in detent plate (510) to secure to housing.
Tighten capscrews.
12. To locate the assembly to the correct position, with the
handle pointing down and on the right hand side of the
housing as viewed from the end opposite the motor,
conduct the following:
a.
Rotate housing to align capscrew holes in upright (26).
Position handle on right and pointing down.
NOTICE
• During this step the shaft support (505) should remain in
position with the output shaft (28) fully engaged in the
upright (26).