Cleco 75NLTVCE Series, Operation & Service Manual

Page: 5 / 20

5
SERVICE INSTRUCTIONS
DISASSEMBLY — GENERAL
IMPORTANT: Transducer and motor can be removed
from the front of the motor housing without disassem-
bling handle and motor housing.
Disconnect tool from air supply. Clamp the right angle head
in a vise and loosen (left hand threads) the motor housing.
Hold the tool in a vertical position with the right angle head up.
Unscrew (left hand threads) and remove the head, and
transducer housing from the motor housing. Disconnect the
wire connector, No. 202183, at the transducer and remove
the transducer and gear train from the motor housing. Slip
the complete motor unit out the front of the housing.
Clamp the angle head in the vise and unscrew (left hand
threads) the right angle housing lock nut, No. 869878, to
remove the transducer housing.
Motor Unit
Clamp the cylinder lightly in a vise with the hex end of the rotor
up. Note: Rotor pinion, No. 869901, used on the 4 and 5
models should be removed at this time. Drive the rotor out of
the front rotor bearing, No. 847528. Be careful not to damage
the rotor. The front bearing plate, No. 869923, cylinder, and
rotor blades, No. 869927, can now be removed from the rotor.
Clamp the rotor in the vise with the rear bearing plate up. After
unscrewing the bearing lock nut, No. 865352, the rotor can
be driven out of the rear rotor bearing.
Motor Housing
Clamp the flats of the motor housing in the vise and use a strap
wrench to unscrew the handle, No. 202182. Disconnect the
wire bundle from the cable connector, No. 202183. Remove
solenoid retainer, No. 203369, with wrench and remove
solenoid, No. 203363. Remove retainer ring, No. 203053 and
rear light ring, No. 203263. Unplug P.C. Board, and remove
from rear of tool. Remove set screws and remove front light
ring, No. 203797. Remove exhaust deflector, No. 203798 and
muffler, No. 202012, from the rear of the housing. Remove
throttle valve cap, No. 864531, valve cap, No. 203380 and
shut-off valve cap, No. 203550 with screwdriver to check
seals and "O"-rings.
Encoder Sensor & Wheel
To replace encoder sensor No. 203724 the wiring must be
unsoldered before the sensor can be unscrewed from the
transducer. A and B sensor are the same, but the wiring must
be done according to the wiring diagram on page 9. The
sensors must be positioned as in (Fig.1). The spacing must
be set between .003" to .006" as in (Fig. 2). The encoder
wheel nut No. 203805 must be secured with Loctite #222.
Important: Do not bend, strike, push or pull on the plastic
coated area of the transducer. Remove the gear train from
the front of the ring gear. Press transducer shaft, No.
203800, out of transducer. Remove the retainer ring, No.
203795. Press transducer bearing, No. 847528, out of
transducer. Drive roll pin, No. 812164, out of ring gear and
transducer. Slip the ring gear off the transducer.