IPA Tools 9008-SE Super MUTT Standard Edition - Manual (Page 9)

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4. TO FIND STICKY OR BAD BRAKE SERVOS: To check the mechanical servo
operation, slowly turn the PSI up and note the point at which both servos engage.
Then reduce PSI and note the point at which the servos release. They should engage
and release together at the same time.
To check for a leaking servo, you can charge Service Side and close ball valve on
the Emergency Side. There should be no increase in PSI on the Emergency Side.
Then reverse procedure and charge the Emergency Side and close ball valve on
the Service Side. No air should leak into the Service Side.
NOTE: Be certain to CHOCK ALL TRAILER WHEELS before conducting
trailer testing.
CHOOSING A BATTERY
• Battery must be clean and leak free.
• Recommended battery size: Group 31 (MUTT
® will auto detect 12 or 24 Volts).
If 24 volts is required two smaller 12 volt batteries can be used and they must be
wired in series!
• Identify battery polarity.
• Attach ring terminal (with red heat-shrink) to positive (+) side and ring terminal
(with black heat-shrink) to negative (-) side. Also see warning indicators on pages
17 and 18. Connections must only be made to clean terminal rings.
AVOID MISDIAGNOSIS
• Before attaching to the trailer connector, make sure all sockets and pins
are clean and tight.
• Any loose or corroded connections may cause a misdiagnosis or show a fault.
• Use a well-charged battery.
Inside Dimensions:
Width: 13.5”
Depth (front to rear): 9.25”
Height at front: 11”
Height inside (front): 12”
Height inside (back): 9.5”