Chevrolet 70 1969 Series, Shop Manual

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E N G IN E ELECTRICAL 6Y-8
PRESS ON CLU TCH
AS SH O W N TO
TAKE UP M O V E M E N T
R ET A IN ER
TO .140"
FEELER
G A U G E
P IN IO N C L E A R A N C E
TPM-3539
Figure 13 — M e a s u r in g Pinion C le a ra n c e (L ig h t-a n d In te rm e d ia te -D u ty )
(Typical)
be sure all brush holders, springs, and brushes are in­
stalled in the field frame; then place field frame over
arm ature shaft. Pull brushes out over com m utator
and engage dowel pin in field frame in hole of drive
housing.
8. Lubricate bushing in com m utator end frame with sili­
cone type lubricant. Place leather brake washer on
co m m u tato r end of arm ature shaft, then position
co m m u tator end frame on shaft and attach with
through-bolts. Tighten bolts evenly and firmly.
9. Connect field coil connector to solenoid “ m oto r” ter­
minal.
10. Saturate oil wicks in co m m utator end and drive end
(if used) with engine oil.
11. Perform “ Pinion Clearance C heck” and “ Free
Speed C heck” described later in this manual.
INTERMEDIATE-DUTY TYPE (Fig. 3)
1. C oat bushing in lever housing and fill cavity at end of
bushing with silicone type lubricant.
2. Position lever housing and fiber brake washer on ar­
mature shaft. Slide overrunning clutch assembly onto
shaft.
3. Place retainer over arm ature shaft with cupped sur­
face of retainer facing end of shaft. Install snap ring
in groove of shaft.
4. Place a suitable washer on top of snap ring, then use
two pair of pliers as shown in figure 11 to force re­
tainer over snap ring. Remove washer.
5. Insert arm ature shaft into nose housing and engage
shift lever yoke with groove in drive clutch shift col­
lar.
6. Push lever housing into counterbore in nose housing
noting alignment marks made prior to disassembly.
Install four bolts and washers to attach lever housing
to nose housing. Tighten bolts to 11 to 15 foot-pounds
torque.
7. M ak e sure all brush holders, springs, and brushes are
installed in field frame and that all leads are securely
connected.
8. Place field frame over arm ature shaft, pulling brushes
out over com m utator, until dowel pin is firmly seated
in field frame.
9. C oat bushing in com m utator end frame with silicone
lubricant and place leather brake washer on c o m m u ­
tator end of arm ature shaft. Install co m m uta tor end
frame over arm ature shaft and secure with through-
bolts. Tighten bolts firmly.
10. Install solenoid mounting screws and connect field
coil connector strap to solenoid “ m oto r” terminal.
11. Perform “ Pinion Clearance C heck ” and “ Free
Speed C h eck ” described later in this manual.
HEAVY-DUTY TYPE (Fig. 4)
1. Assemble solenoid plunger to shift lever and secure to
housing with bolt, washer, and nut.
2. C o at bushing in lever housing with silicone type
grease, then insert armature shaft through lever hous­
ing. Install clutch assembly on shaft.
NOTE: Make sure lugs on shift lever engage
collar on overrunning clutch.
3. Position nose housing on lever housing with match
m arks m ade prior to disassembly aligned. Install at­
taching bolts and tighten to 1 3 to 17 foot-pounds tor­
que.
Figure 14 — M e a s u r in g Pinion C le a ra n c e ( H e a v y Duty)
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L