PS Magazine - SEPTEMBER 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 250
SEPTEMBER 1973
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CAM DWELl JNGLES
Dear Hal-Mast,
We arE encouraging Our automOtivE mechaniCs (M±S 63²series) to use
the troubLeshooting gear in their automotiVe ³Ommon tooL seT.
´his tEst Equipment saves timE and paR and does a better jobµ But using
the ´ac¶²Dwe· ´ester¸ FSN
491078±859,
to ³heck out and sEt gAso¹ne
engine ignitiOn systEms is giving us a hard timeµ
SPLIT SLEEVE
ClAM± GOES
AROUND ADAPTER
CABLE
Finding the exact cam dwe· angLe for Ea³¶ sEries Of tA³tiaº t
²
ucKs is
¹ke LoOking »r t¶at nEedLe in a ¶aystackµ ¼OmE manuaLs gIVe 1t, some
don't½ ¾nd somE give con¿i³ting info
.
Àan you givE us the
_
cam dwE· an
f
Le
and t¶E ³orresponding point²gap for each series of ÁactI³aL truÂks usÃg
gasoLinE engines?
-±²
CPT R.C²M³
THE ANGLE AT WHICH
POINTS REmAIN CLOSED
IS CALlED "CAm² OR "DWELL ANgLE':
CAm ANgLE
'
I
TO iNCREASE ANGLE .
.³ DECREASE PoINT GAP
to DECREASE ANGLE ´³. INCREASE POINT GAP
3´
TACTiCaL VEHICLES
DISTRIBUToR
mAKE
mµde¶ Nµ.
v-Tµn m151 ·ser¸es
IAU¹4020¹UT
Auºµ»L¸ºe•
3¼Tµn m½7¾se¿¸es
IAUÀ4005·UT
Auºµ·L¸ºe•
IAU·4007·UT
Auºµ¾L¸ºe•
1 v¼Tµn m715¹ser¸es
IDA·4601¹UT
P¿esºµ Áºe
2%·Tµn m½5·ser¸es
1111556
DeÁcµ¹ReÃy
5¾Tµn m54¹ser¸es
1111561
DeÁcµ·ReÃy
10¹Tµn m12½¹ser¸es
1111605
DeÁcµ¹ReÃy
Xm706 CµÃÃÄndµ CÄr
ÅDa·4801¼UT
PresºµÁ¸ºe
m11½ CÄ¿r¸er Ser¸es
IBF·4004·UT
AuºµÆL¸ºe•
If you've got one of those M390
or M390C 2-ton trailers, make a
note Fr yourseLf±give A shot of
oil to the adjusting nuts on the
leveLing jack swiveL shaft.
They're showin' up rusted so
bad they won't move.
Hit the swiveL ²ousing with
your ³oiL can, too.
´dd µthis poop to the quarterLy
"OiL Can Points¶ in youR ·ubRica¸
tion Chart¹ºig 3-2 in TM
9»2330¼
235¼14 (Nov 72).
½emember, you've got 10 of
those nuts on your M390¹2 ¾uts
Fr each of ¿he 5 leveLing JacKsÀ
´nd the M390C has 12 nuts¹4
Fr eac² oÁ ¿he 3 jacksÂ
µ¶
CAm DWELL
POINT GAP
ANGLE
½9°·46Ç
0´017 ·
È022
½7É·40Ç
0´ 020Ê 0´ 002
½7ÇË40Ç
0´020Ì 0´002
½8Ç·44Ç
0³020
·
0.002
½1ǹ½7Ç
0´022
½1Ç·½7Ç
0.022
28ǹ½0Í
0.016·0.019
One seº27η½Ï
0´016·0.0
Ð
1
Bµºh ½4ǹ40Ç
One seº27Ç·½Ñ
0.016·0.021
Bµºh Seºs ½4Ò·40Í
(Ä
!
1000 RPm)
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