How can I tell the difference between a ZF unit and the AW unit?
Date: 22 Apr 1993 22:37:49 -0400 (EDT) From: V093P9MD@ubvmsb.cc.buffalo.edu Subject: Re: tranny I.D. To: swedishbricks@me.rochester.edu The differnce between the ZF unit and the AW unit is easy to see. If you have a little switch on the side of the shifter knob, you have the AW series. The ZF lacks this knob. Also, the ZF shifter can be moved from D to 3,2,1. I think (not shure though) that the AW only has D to 2,1. The AW 70 and 71 are very similar, the latter is a slightly beefed-up one to deal with higher loads (like the 2 differnt OD units for the manual tranny). The turbo’s get (for obvious reasons) the AW 71. The ZF unit was used at first exclusively on the Turbo Diesels, and later for the B230 (naturally asperated). Volvo sort of played muscial trannies as I think that the 760’s have had both the AW and the ZF units over the years. I am presonally very pleased with the ZF unit in my 760 TD (’84), it is very smooth, and very responsive, but never jerks or hunts for gears. BTW rec
