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#1
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4 Speed Getrag Question
I have a question about my 4 speed Getrag from the '83 240D that's now behind my OM617. Everything works perfectly except it wants to grind going into reverse. Given that it's fine into first I don't think the clutch is dragging and it doesn't try to "pull" when stopped in gear with the clutch depressed. I realize that there are no synchros in reverse and maybe that's the issue.
My solution may be to start the engine with the trans in reverse when backing is needed but I wondered if anyone else has had this issue. Thanks Dan |
#2
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Always? If you start with it in 1 and clutch then go into R without moving the vehicle it grinds?
Clutch is dragging.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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Quote:
Thanks again Dan |
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did you give it time to stop spinning?
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#5
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Put it in a forward gear first, then w/o the vehicle rolling, go to reverse.
This will stop the gear from turning, I don`t believe reverse has a synchro. Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#6
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Only use pull-through parking spots
(Sorry I had to)
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$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment |
#7
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definitely no synchro in reverse (originally I said first but meant reverse). It is rare for transmissions to have it in first I believe but I am pretty sure my big dodge has it.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. Last edited by t walgamuth; 03-17-2015 at 06:03 PM. |
#8
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Actually, in cars made in the past 20-30 years, I think synchronized first gear has become pretty much the standard.
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes 1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod 2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die." |
#9
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I meant to say reverse.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#10
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FYI
This transmission should have four synchronizer rings.
x2 A1152623034 x2 A1152622934 All too often, the reverse issue is exacerbated by incorrect fit between pilot bearing and input shaft. This puts excess force = shifting the input shaft to the rear = causing side binding on the gear line. .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#11
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I suspect Mr. Hunter may be close to the truth. I had a hard time getting the pilot bearing in there (remember, there is a 1mm difference which I did my best to rectify) but it did go in pretty snugly. Hard to know how much snug is the factory tight fit and how much is too tight. If that proves to be the issue I think I'll just have one turned in bronze. Next winter! I can run it like it is for this season.
And thanks for your input! Dan |
#12
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Rats! I'm still not "Smarter than a T Walgamuth."
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes 1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod 2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die." |
#13
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Thanks but you prolly are!
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#14
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Maybe Tom - but us old guys get crafty (age and guile beat youth and ability). And we're still at it!
Dan |
#15
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yeah, I'm very crafty as long as I can remember what I went into the next room for!
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
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