 When I first heard there was a
$15.00 tech manual on the NV4500, I figured it'd be worth less than
that…most factory manuals I've bought have cost $50 &
up. With a soon-to-come tailshaft swap in the works to fit an
NV4500 into my CJ, I could use all the help I could get, so I
whipped out the credit card & called Mascotech at
1-800-393-4831. With $4.00 S&H, my manual was on the way.
The
manual, officially titled "NVG 4500 5-Speed Manual Transmission
Technician Reference Manual", is published by General Motors'
Service Technology Group. As it turns out, it is a manual that is
intended to be a review of the GM Training Center classroom
coursework, and includes a disclaimer that it is not intended to
substitute for the applicable service manual. However, this
reviewer found it contained 154 pages full of detailed information,
specs, drawings, photos, parts lists, and diagnoses.
The manual is laid out into four major sections: Description, Powerflow, Diagnosis, and Reference.
Description is an 86-page section covering everything from applications, identification, and design to lubrication, venting, seals, synchros and shift mechanism. Included is a 20 page section on component support (!). Reference has 26 pages of the usual parts lists, torque specs, non-reusable parts lists, etc. One useful feature is the GM parts number for all the service parts in the transmission, including shims, seals, bushings, pins, plungers, springs, synchros, spacers, thrust washers, & lubricant.Graphics throughout the manual are very good, using large B&W photos, line-art blow-ups, and 2-D & 3-D drawings tinted various shades of black, gray, and blue to highlight & delineate various details of the transmission (especially useful when trying to understand the powerflow section). One particularly helpful use of color in the graphics is a perspective sketch of the transmission with all the seal areas highlighted in blue. Overall, I was very pleasantly surprised by the quality & content of the manual. At about 3/8" thick, it contains all I'd ever need to know about the NV4500. It's a bargain at twice the price. Jeff Layton 10 Jan 97 Mascotech (800) 393-4831 Follow us on Twitter at www.twitter.com/OffRoadDotCom
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