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#1
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Please Help!! 560SEL 722.350 Transmission Problem.
Got this 560 SEl about a week ago (with 722.350 Transmssion)
Problem. 1. Gear shift 2-3 at 2500RPM REGARDLESS of Bowden cable adjustment(tried Max and Min but Shift point still 2500RPM) 2. Doesn't go into 4, need to shift to N (from D) and back(at about 3000RPM) then tranny goes into 4 What could the problem? (Changed K1 spring kit, new ATF and Filter) Could it be K2 Spring kit? If yes, where can I get K2 Spring kit? Help appreciated. Thanks in advance Last edited by npk; 09-07-2011 at 08:08 AM. |
#2
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Have you tried driving with the control pressure cable disconnected?
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Quote:
Thanks for reply. Are you refering to the Bowden cable or the vacuum line that goes to the modulator? |
#4
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Control pressure CABLE. It controls when the trans shifts.
Modulator controls how HARD the trans shifts.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#5
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OK...will disconnect the bowden cable tomorrow and go for a test drive.
Thanks for helping |
#6
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This might seem like an obvious question - but - was it working properly before you fiddled with the k1 spring in the valve body?
I've not seen information like this in the 722.3 ATSG manual but here's information for the 722.1 which I think has the same relationships... As you can see k1 clutch is required for 4th gear on a 722.1 => I'm guessing it is the same for a 722.3
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! Last edited by Stretch; 09-07-2011 at 12:35 PM. Reason: Added a bit |
#7
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Disconnect the control pressure cable and car still shift 2500RPM
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#8
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Quote:
Thanks. NPK |
#9
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Quote:
I was asking if the transmission was shifting into 4th before you put in a new K1 shift kit. (I guess not - but if it was, then changing the spring hasn't helped) As you suggest in your first post the K2 clutch is also important for 4th. I have got my hands on a different ATSG manual for the 722.3 - and I can see in there that the relationships shown in this manual are similar to the 722.1 => However, reading the wrong manual again - the 722.1 ATSG manual says not shifting into 4th lists governor pressure too low... this compares favourably with your shifting at 2500rpm problem in the trouble shooting section in this new manual I've got hold of... ...where it says up shifts in lower speed range gears only:- 1) Check cable 2) Check throttle stop 3) Check regulator pressure - if too high change the governor
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
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Dear Army,
Thanks for all the help. "3) Check regulator pressure - if too high change the governor"....is this the vacuum modulator mounted on the tranny with a small vacuum hose to the engine inlet manifold? |
#11
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Just to add, there was small seepage of ATF from the kickdown switch...I changed all the 3 pcs of O-rings to Viton...could there be an internal leak that cause the shift problems?
Thanks in advance. NPK |
#12
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__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#13
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Quote:
I'm sending you a PM.
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#14
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Thanks for infor but would K1 or K2 kits affect the shift hardness, rather than the shift point which the car is suffering now?
After the change of k1, shift form 2 to 3 is nice but late(ie.high RPM, close to 2500rpm) Quote:
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#15
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I may have the document..will check and revert.TQ
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