This is good advice. I have a TH350 tranny behind a 388 stroker SB Chevy
motor. I replaced the old radiator with one with more cores and a large
High Efficiency tranny cooler. I tow trailers, among other things, and
have had no problems with my K5 Blazer.
If you change the fluid every 25,000 miles max, you should be good for at
least 100,000 miles.
Royce
=============================
On Thu, 5 Jul 2001 09:39:27 -0700 "chance wolf" <timberwolf@wheeldog.net>
writes:
>
> ----- Original Message -----
> From: "Brian" <polaris650_92@yahoo.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Wednesday, July 04, 2001 5:26 PM
> Subject: [MV] M1009 Transmission Problems
>
>
> > Hi,
> > I own a blazer, what transmission problems are they
> > prone to? Are there any warning signs? I have about
> > 47,000 on mine.
>
> Make sure your radiator is in good shape, as they can look
> externally good,
> but have cores with diminished cooling capacity or ones that are
> downright
> plugged, and you won't notice a thing until your Blazer feels lazy
> about
> shifting into third, and/or 'winds up' before going into reverse.
> The
> transmission cooling lines run right through your radiator, and, as
> it turns
> out, the area of the rad most likely to plug is also coincidentally
> the area
> responsible from keeping your transmission fluid at a respectable
> operating
> temperature. From bitter personal experience, the THM400 that the
> 1009/1008
> vehicles are equipped with gives no warning whatsoever before it
> broils, and
> the job to replace the direct-drive clutches and associated
> over-temp
> components runs about CAN$800 with labour. If you try shopping for
> a used
> THM400 transmission to know that all 400's are not created equal,
> and
> finding the correct one in the local Nickel press or junkyard might
> prove
> daunting.
>
> I've piggybacked external 20,000 GVW transmission oil coolers on
> each of the
> CUCV units at work to head off any more emergency pitstops at Mr.
> Transmission in far-flung lands, and for the investment required,
> they're
> nothing but good insurance.
>
> Andy Hill
> MVPA 9211
> Vancouver, B.C.
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