Chevrolet BEAUVILLE SPORTVAN G10 SERIES, Руководство по обслуживанию

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CLUTCHES & TRANSM ISSIONS 7-13
7. Reinstall transm ission support crossm em ber to trans­
mission and fram e.
8
. Rem ove transm ission lift equipm ent.
9. C onnect propeller shaft to transm ission.
10. C onnect m anual control lever rod and d eten t cable to
transm ission.
11. C onnect vacuum m odulator line, and speedom eter drive
cable to transm ission.
12. Refill transm ission through filler tu b e , and follow ing the
recom m ended procedure provided earlier in this section.
13. Check transm ission for proper o p eration and for leakage.
Check an d , if necessary, adjust linkage.
14. Rem ove van from hoist.
PARK LOCK PAWL SHAFT
AND PLUG REPLACEMENT
Removal
1. Place van on hoist and remove oil pan drain plug to drain
oil.
2. Rem ove oil p an , governor cover, governor and all park
lock pawl attaching parts.
3. Slide pawl tow ards front o f case and cock on shaft.
4. Using a suitable drift rap sharply against the pawl until
plug is freed from case. Care m ust be taken so th at the
pawl does not h it the cast post in case w hich holds the
pawl return spring.
5. Remove shaft.
Installation
1. Install parking pawl using a new shaft and plug. Coat plug
w ith a suitable sealer prior to installation and stake in
place.
2
. Install park lock pawl attaching parts, governor, cover,
and oil pan.
3. R eplenish transm ission fluid and remove van from hoist.
OTHER SERVICE OPERATIONS
A lthough certain operations, such as oil pan gasket or
m anual levers and oil seal replacem ent, d e te n t cable, governor,
filler pipe “
0
” ring, speedom eter drive gear, case extension
“ O ” ring and rear oil and yoke seal, vacuum m od u lato r, and
interm ediate clutch accum ulator cover service m ay be p e r­
form ed from u n d ern e ath the vehicle w ith o u t removing the
T urbo Hydra-M atic 350; their service procedure is covered in
the Overhaul p o rtio n o f this Manual and is n o t repeated here.
Refer to the T urbo H ydra-M atic 350 Section o f th e Overhaul
p o rtio n o f this Manual for all o ther service operations not
covered here.
TURBO HYDRA-MATIC 350 DIAGNOSIS PROCEDURE
A ccurate diagnosis o f transm ission problem s begins w ith a
th orough understanding o f norm al transm ission o peration. !n
p articular, know ing w hich units are involved in the various
speeds or shifts so th a t the specific units or circuits involved in
the problem can be isolated and investigated fu rth e r. A na­
lytical diagnosis will p ro te c t th e technician from come backs
and certainly will im prove ow ner satisfaction.
An im p o rtan t and often overlooked aspect o f diagnosis is
finding out specific custom er com plaints. F or this purpose a
short ride w ith the custom er will often prove beneficial. It
m ay be found th a t the co ndition the custom er w ants corrected
is standard and should n o t be altered.
The follow ing sequence, based on field experience, provides
the desired info rm atio n quickly and in m ost cases actually
corrects the m alfunction w ith o u t requiring the removal o f the
transm ission. Details o f the item s listed in this sequence are
covered further in the te x t.
SEQUENCE FOR TURBO H Y D R A -M A TIC 350
DIAGNOSIS PROCEDURE
1. Check oil level and condition.
2. Check and correct d eten t cable adjustm ent.
3. Check and correct vacuum line and fittings.
4. Check and correct m anual linkage.
O IL LEVEL A N D C O N D ITIO N CHECK
Always check the oil level before road testing. Oil m ust be
visible on dip stick prior to operating the vehicle. Erratic
shifting, pum p noise, or o th e r m alfunctions can in some cases
be traced to im proper oil level.
Oil level should be checked w ith th e selector lever in the
Park (P) position, engine running, and the vehicle on level
pavem ent.
Fluid level should be to th e FU LL m ark w ith the tran s­
mission at norm al operating tem perature (1 7 0 “-190°F.). With
warm fluid (room te m p eratu re ), the level should be at or
slightly below the ADD m ark.
If oil level was low , refer to Oil Leaks.
The condition o f th e oil is often an indication o f w hether
the transm ission should be rem oved from th e vehicle, or to
make further tests. When checking oil level, a burned smell and
discoloration indicate burned clutches or b and and the trans­
mission will have to be rem oved.
M A N U A L LINKAGE
M anual linkage adju stm en t and th e associated neutral start
sw itch are im p o rta n t from a safety stan d p o in t. The neutral
start sw itch should be adjusted so th a t the engine will start in
th e Park and N eutral positions only.
C H E V Y V A N S H O P M A N U A L