Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-06-2004, 09:22 PM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Markings on Speedometer Dial.

What do the Single, Double, and Triple marks on the speedometer dial suppose to indicate?

Phil

__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #2  
Old 12-06-2004, 09:24 PM
Registered User
 
Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Shift points ?
__________________
2007 C 230 Sport.
Reply With Quote
  #3  
Old 12-06-2004, 10:29 PM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Redline in each gear (otherwise known as maximum speed for each gear). Do not exceed that speed, especially on older engines, as they tend to do nasty things like throw rods out the side of the block when you do.

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
  #4  
Old 12-06-2004, 11:05 PM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Do these markings on the speedometer supersede the red line on the tachometer? For example: If I was to keep the automatic transmission in first gear, and stepped on the gas, will I reach the first mark on the speedometer prior to reaching the red line on the tachometer?

Phil
__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #5  
Old 12-06-2004, 11:28 PM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
No, they should match pretty close (allowing for speedo errors). Do not exceed redline on the tach under any circumstances.

Up to the W123s, most MBs didn't have tachs, hence the marks on the speedo.

Usually, automatics will upshift about 5 mph less than the hash marks even with the kickdown engaged. Watch on manual downshifts, though.

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
  #6  
Old 12-07-2004, 12:37 AM
MTI's Avatar
MTI MTI is offline
Registered User
 
Join Date: Nov 2002
Location: Scottsdale, Arizona
Posts: 10,626
Keep those marks in mind when you're downshifting . . . it's probably easier to over rev an engine when you slip into a lower gear than running up the gears.
Reply With Quote
  #7  
Old 12-07-2004, 10:49 AM
Registered User
 
Join Date: Aug 1999
Location: ajax, ontario, canada
Posts: 773
like MTI said, those marks are for downshifting.

for upshifting, you have the tachometer to refer to. But it is more difficult on downshifting to determine ahead of time, using the tachometer alone, if a downshift at a given speed/gear to a lower gear will over-rev the engine at that lower gear.

For downshifting, you look at the speedometer reading and the marking on the dial corresponding to your target gear - the speedometer needle should be below that hash mark for a safe gearchange.
Reply With Quote
  #8  
Old 12-07-2004, 11:39 AM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Thanks guys. The answers make sense.


Phil
__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #9  
Old 02-21-2014, 11:27 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,613
Actually the hash marks are for keeping the engine from over-revving going down hill.

__________________
[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.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page