PS Magazine - TB 43-PS-588
PS, The Preventative Maintenance Monthly
ISSUE 588
NOVEMBER 2001
W
hen an excavator's hood is removed, wires to the brake and clutch fluid reservoir
sending units hang out like sore thumbs. If the wires get broken, you won't get a
reading inside the cab when the fluid levels are low.
So get a buddy to help out when
you remove the hood. Make sure
you lift instead of slide the hood
off. It'll save wires and your back.
Once the hood's off, check the
wires where they clip into the
reservoirs. Make sure they're good
and tight. If they're not, snug 'em
up. If the connectors are loose on
the wires, report them.
Two-man lift
saves wires
PS 588
NOV 01
24
130G Grader…
T
here is no wear limit criteria or PMCS check in the grader TMs for the mold-
board's slide bushing.
But when the bushing wears out, the moldboard's slide cylinder starts to shift and
drop. Eventually the weight of the grader's blade puts too much strain on the cylin-
der. That damages the cylinder seal and causes it to leak.
To head off this damage, eyeball the brackets that hold the moldboard in place.
The brackets are located at both
ends of the blade.
There should be at least
1
∕
8
inch
between the moldboard and bracket.
Less than that means the slide bush-
ing is shot. Your unit mechanic must
replace it. Make this a quarterly
check until it's added to the TM.
PS 588
NOV 01
25
M9 ACE…
WIRE DISCONNECT?
T
he ACE’s ejector guide roller fittings get missed during services because they’re
out of sight in the earthmover’s bowl. Without lube, the rollers lock up.
A roller that won’t turn on one side of
the bowl causes the ejector to bind or drag
on the other side of the bowl. The end
result is a lot of wear and tear and early
failure for the ejector or bowl.
If you see a rub or indent on the roller
bench, it means a roller isn’t turning freely.
During scheduled services, give each
roller’s grease fitting several pumps of
grease. While you’re at it, do the same for
the grease fitting on the ejector’s cylinder
rod.
For safety’s sake, make sure the ejector
is pushed completely forward and the lock
is engaged before you go into the bowl.
S
ome vehicle engines have starting aids built in and others don't.
But never use
spray-can ether regardless of whether or not your equipment has a starting aid.
Using ether where it's not supposed to be used cracks pistons, bends rods and
ruins heads.
When your construction equipment won't start, here's what to do:
•
Troubleshoot your vehicle according to its TM.
•
Go easy on the vehicle's starter. Never keep the starter engaged for more
than 15 seconds.
•
Have your mechanic replace an empty ether canister if the vehicle has one.
•
If your vehicle won't start in three tries, call in your mechanic to find out
what's wrong.
Construction Equipment…
Spray-can Ether? Forget it!
just
keep
walkin’!
shoot!
canned
again!
Wear marks mean
roller isn’t turning
Keep guide
rollers lubed
SEE…
Look for
1
/
8
-in gap
Bracket
Moldboard
588. 24-25 (C)
10/2/01
12:45 PM
Page 1
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