Eaton FS-6105 - Operating Temperatures

LUBRICATION
Operating Temperatures
- With Heavy Duty Engine
O il
and Mineral Oil
The tr ans mi ssion sh ould not be opera t ed con·
sis l ently at temper atures f!bO\le 2so•F (120,.C}.
However, in1e rmi1tent opera.ting temperatures
to 300•F (149"C) wi ll not h arm the transrni5"
slon. OpefaJ i ng lernperatures above 2so•F
Increase lhe lu br icant's rette ot oxidation 11t1d
shor ten its e ff ective li te. When the average
operating temperature is above 2so•F, t he
tra n smission may requlre m ore frequent oll
changes or ex ternal cooling.
The following condi tions in any combina-
tion can cause ope rating temperatures of over
250"F: {1} ope r ating consistently al sl ow
speeds, (2) high ambient temperatures. (3} re·
str i cted ai r flow around (4) ex ·
ha u &t sys t em t oo close l' O tr ansmission , (5)
high hor se power, overdrive ope r ation
Ex ternal on coa t ers are available lo reduce
oper ating tempera.l ures when the above cond i·
lio ns ere enoountered.
Tran sm ission 011 Coo l ers are:
Re<:o m mended
- Wilh engines ol 350 H.P. and abOve
wllh overd ri ve l raflsm l ss ions
Requi red
- With engines 399 H.P. and above wl1h
overdrive transmiss i ons and GCW 's
over 90 ,000 lbs.
- Wi th engines 399 H .P. and above and
1400 lb&.·FI. or greater torq ue
- With engines 41.SO H .P. and above
- With EP or Multipurpose Gear Oil
Mllct EP geetr oil and multipu rpo5e gear oil at e
nol reoom m ended wh e <i lubrican t ope rat in g
temperatures
are above 230•F (1 10 •1 In addl·
lion, transmission o il cooters a.re not recom·
mended with these gear 0115 since i lle oil
coole r ma ter ials may be at tacked by these
gear o11s . The l ower temperature lim it and oll
coo l er res1rictlon with these gear o il s ge ne r-
a ll y l im i t their success to milde r ap p li c ations .
•
Proper Lubrication Levels
as Related to Operating
Angles
It the transm i ssion operating ang le la more
than 12 degree:&, Imp r oper lu bricaJlon can
occur. Th<1 operating angle is the 1r ansm lss i on
mounting ang le In lhe cha ssis plus t he per ·
cen1 o f upgrade (express.ad In deg rees).
The cnar1 below lllus 1 ra t es the safe perc;:ent
of upgrade on which the t tansm issio n can be
used with var i ous chassis mounting ang l es .
For examp le: It yo u have a 4 degree trans mis-
si on mounUng angle, then 8 degrees (or 14
percent ot grade) Is equal to lhe Omit ol 12
degrees . If you have a 0 mounting
angte, 1he t ransmission can be operated on a
12 degree (21 percent) grade.
Anytime the transmission opera li ng angle
of t2 degrees ts ex.ceoded for an extended
period o f lime the transmlssfon sho ul d be
equipped with an oil pump o r coo 101 kJI 10
insure proper lubrication.
No le on 1 he charl t ho cUect low oil levels
can have on safe operating ang l es . Allowing
the oil level 10 fall lh" be l ow t he fille r plug
hole reduces i he degree ot grade by approxi-
mately 3 degrees (5.5 percent).
Proper Lub, lcatlon L eve ts are Esun tla ll
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