PS Magazine - TB 43-PS-509
PS, The Preventative Maintenance Monthly
ISSUE 509
APRIL 1995
Dear EditoR
We've Installed b±ke vent lines on
all of our 2
1
/Aton trucks.
While making a trip recently the
brakes on one oF them locked up²
Our Insp³ct´on of the brµke SYstem
showed It was OK, but we found that
the vent valve (H¶N 40726719)
at the end of the vent Line waS clogg³d·
We replaced
I,
and our lockup prob-
lem was solved·
John
C.
Bu¸o
Brockton¹
MA
P-T±HK OPTh
Good detective work. You can saVe otheR dRI±ers the lockup headache by Re-
moV²ng the Vent VaLVe duR²ng noRmal opeRat²ons³ ´t'S needed onlµ duR²ng deep
Wate¶ fo·D²ng¸ ¹t keeps Water Fºom gett²ng ²nto the brake l²nes. Bµ leaV²ng ²t oN
µou ²ncrease the chances ²t w²LL plug up and Lock up the brakes¸
F
reeze!
Lube Spring Pin
That's easy foR a pin ±ha±²s ³us±ed In±O
a ³eaR saddle spRIng On yOUR M4´-serµes
±³Ucks. ¶t'll s±ay FrOZen even when yOU
want It ±O mOve·
S±Op diRt and Rus± FrOm lOckINg the pin
¸n plAce¹ ºemOve the Pin, cLean I± and
»ube i± Wi±h
Ga
every six mOn±hs¼
C½ean and lube ±he saddLe hO¾es, ¿OO¼
Keep an eye On ±he de¿ent BaÀ¾ and
spRing when yOU RemOve ¿he PÁn ±hOUghÃ
They aRe easIÀy JOs±·
Make a nOte Än±il thIs InÅO Is added tO
±he semIannUal seRvices In ±he
2
ÆÇ2ÈtOn
tRUckTMsÉ
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