Chevrolet BEAUVILLE SPORTVAN G10 SERIES Скачать руководство пользователя

Страница: 246 / 350

C LUTCHES & TRA NSM ISSIO N S 7-8

12. Refill transm ission w ith lu bricant recom m ended in L u b ri

catio n , Section “ 0 ” o f this m anual.

13. Check and if necessary, adjust clutch or transm ission

co n tro l linkage to achieve p ro p er o p era tio n .

TRANSM ISSION A L IG N M E N T

In some instances w here “ excessive” gear whine or high gear

h o p o u t, particularly at 50 MPH and u p , are en co u n tered ; and

after all o ther probable causes have been checked, an align
m ent check o f th e transm ission and clu tch housing m ay be
helpful.

A special to o l, on w hich a dial indicator is m o u n te d , is

necessary  to   check  the  transm ission  case  rear  bore  alignm ent.
This  to o l  may  be  m ade  from   a  new   or  good  used  clutch  gear
w hich  has  a  good  bearing  surface  on  the  crankshaft  pilot  end
and  at  the  front  m ain  bearing location.

The splines on the c lu tch gear shaft and the te eth on the

clutch  gear  should  be  ground  o ff  so  the  shaft  m ay  be  ro tated
in  a  clu tch   disc  hub  w ith o u t  interference  w hen  assem bled  in
the  car.  Weld  a  piece  o f  1 /4 "   rod  in  th e   m ainshaft  pilot  bore
long  enough  to   extend  o u t  the  case  rear b o re.  Assemble  a  good
bearing  on  the  clutch  gear  shaft  and  secure  it  w ith   the  clutch

gear bearing snap ring. A tta ch a suitable dial indicator to the

rod.

Procedure

1. Rem ove the transm ission from th e vehicle and co m

pletely disassem ble, except for the reverse idler gear.

N O T E :

In any case where the clutch gear p ilo t or

p ilo t bearing is excessively loose or w orn, the pilot

bearing should be replaced before checking the

transmission case rear bore alignm ent by the dial

indicator m ethod.

2. C arefully install the special tool w ith the dial indicator in

the transm ission case w ith th e face o f the ind icato r to the
rear o f the case and w ith the tracing finger co ntacting the

I.D. o f th e case rear bo re. Secure in place w ith a clutch

gear bearing retainer.

3. Assemble th e transm ission case to the clutch housing and

tighten th e four transm ission m ounting b olts securely.

N O T E :

Be sure to clean o ff any paint or other

foreign material on the mating faces of the clutch

housing and transmission as any foreign material on

these faces w ill change alignment; also, check care

fu lly fo r dings or burrs on these mating surfaces and

remove carefully as necessary.

4. Dial indicate the transm ission case rear bore and record

th e indicator readings in th e 12, 3,

and 9 o ’clock

positions.

N O T E :

It is best to start the reading at the 3, 6, 9

or 12 o'clock position closest to the point where the

indicator plunger reaches its m axim um outward

travel. Set the dial indicator at “ 0 " at this location

and then record the 3, 6, 9 and 12 o'clock readings

in ro tation.

Fig. 9 —Removing Mainshaft Rear Oil Seal

5. Install tem porary slo tted shim s betw een the transm ission

case  and  th e  clutch  housing  in  the  quan tities  and  at  the
b o lt  locations  as  necessary  to   bring  m isalignm ent  at  the
transm ission  case  rear  bore  to  a  m axim um   o f  .0 0 5 "
indicator  reading  in  either  the  vertical  or  h o rizontal
direction.

E X A M P L E :

If the m axim um indicator reading is

at 12 o'clock position, p u t shims on the tw o b o tto m

bolts.

. A fter the position and q u an tity o f shims has been

determ ined and recorded th e transm ission case m ay be
rem oved.

N O TE:

The

clutch

housing

should

then be

stamped, showing the position where shims are to be

installed and the thickness o f shims at each location.

7. Inspect the external clutching te e th o f the clutch gear

and  second  speed  gear.  Inspect  th e  second  and  third
speed  clutch  internal  clutching  te e th .  If  the  te eth   are
w orn  or  tapered,  even  slightly,  the  gears  should  be
replaced.  Reassemble  the  transm ission.

. Install the transm ission assembly to th e clutch housing,

using  the  correct  num ber  o f shims at  the  proper  locations
as  previously  determ ined.  Shims  are  available  by  unit  part
num ber  w ith  each  unit  consisting  o f the  following  shims:
4 - . 0 0 2 "  shims  Id en tific atio n —tw o  corners  cut  off.

2 - .0 0 5 " shims Id en tific atio n —one corner cu t off.

1—.0 1 0 " shims Id en tific atio n —all corners square.

N O TE:

These special shims have a tab on one end

fo r ease o f installation. Do n o t slot the shims fo r the

permanent installation.

REAR O IL SEAL REPLACEMENT

1. Raise vehicle on hoist.

2. Drain lubricant from transm ission.

3. D isconnect propeller shaft from transm ission as described

in Section 4 o f this m anual.

4. Pry seal o u t o f extension or rem ove seal using tools