A CLOGGED BREATHER IS
LEAKY SEALS AND COSTLY


 CHECK YOUR BREATHER VALVES--
 LIKE AROUND THE STEERING GEAR,
 DIFFERENTIAL, TRANSFER ANPAXLE
 HOUSING-- A PIRT- PLUGGED BREATHER
r CAN MEAN TROUBLE,


 If the dirty valve is on the transfer
or steering gear housing, you may
find the shaft and control valve oil
seals bursting.
 If it's the grimy one on the differen-
tial or axle housing, you'd better inspect
the brake drum for lubricant blown out
through the seals.
 You may even suffer an outbreak of
failures if enough pressure has built up
from many paint-blocked breathers on
new and rebuilt trucks.


A ONE-WAY TICKET TO ALL SORTS OF TB ORD 625 (Jan 56) gives you
REPAIRS good pointers on cleaning ventilating
 valves. --
 GET TO valves. '.KE IT TELLS
 KNOW US ...VWHERE \ WHEN TO INSPECT.
 WE'RE AT...ANP FOR s
 PM'S SAKES...
 KEEP US C : -..
 BREATHIN'!
 -Y 'MEAN PAILY- RIGHT AFTER
 A SNOWY OR MUPPY MISSION

 Along with the TB, be sure you read
 the TM of your own vehicle and replace
 a valve according to the TM word.
 SCheck your -20P for the breather you
 need.
 FFFF Keep in mind to clean the area
 GAsF around the valve too. Otherwise, any
 dirt there will'drop into the case when
 you're removing the vent.- MA
 You clean all ventilating valves by
 soaking them in a drycleaning solvent
 or in mineral spirits paint thinner.
 After that, brush them with a stiff
 brush.
 The whole idea is to make certain
 you've cleared the passages, and that
 the valves move freely. .;'
 If you have to, use a soft metal rod
 to remove obstructions.
 SThen, after you've dried the valves
 I with compressed air (10 PSI or less),
 you finish the job by lubricating them
 sparingly with clean engine oil.
 You'll see new life in your truck
 after this small PM chore.
 25


V,7-