4l60e updates as per the Jasper tranny:
GM 4L60E / 4L65E / 4L70E
UPDATES from JASPER
3 Year/100,000 Mile
Nationwide
Parts & Labor Warranty
Remanufactured in the U.S.A.
Full warranty disclosure available upon request.
Specifications subject to change without notice.
815 Wernsing Road • P.O. Box 650 • Jasper, IN 47547-0650
(800) 827-7455 • Fax (812) 634-1820 •
www.jasperengines.com
AD-E06-86-55344, Rev Date: 01/11/11 Page 1 of 1
Common Failure / Concern: JASPER Solution:
Slow pressure rise, slips under
heavy throttle, delayed reverse
engagement
• Install new pump boost valve and sleeve
Erratic pressure causing slipping
clutches
• Modified pump slide with spacer
3-4 clutch failure • Remove cage springs in 3-4 clutch and enlarge exhaust port in separator plate
Clutch failure or delayed
engagement
• Remove low/reverse check ball from rear of case
Soft lockup, no lockup and shift
complaints
• Ream and replace actuator feed Limit, TCC control valve and TCC regulator
valve
3-2 tie up, 3-4 clutch failure,
delayed reverse engagement
• Replace forward and reverse abuse bore plugs in valve body
Line pressure instability causing
harsh shifts or slipping clutches
• Ream and replace pressure regulator valve in pump
Clutch failure • High energy 3-4 clutch pack, increased from 6 lined and steels to 7 lined and
steels
Band failure • Installation of high energy 2-4 band
• Enlarge orifice in separator plate to increase 4th piston pressure to equal line
pressure
Reaction shaft wear and bushing
wear
• Installation of wide rear sungear bushing to increase support at contact load
area
Reverse clutch dragging in forward
gears
• Modify/verify exhaust hole for low/reverse clutch oil
Rear stator shaft bushing failure on
300mm converter
• Install a PTFE-coated rear stator support bushing