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2004 TRANSMISSION 
Automatic Transaxle Overhaul - Endeavor 
GENERAL INFORMATION This automatic transaxle is made up of the following main parts. 
The gear train is made up of 3 multi-plate clutches, 2 multi-plate brakes and 2 
planetary gears made up of a sun gear, carrier, pinion gear and annulus gear. 
The torque converter employs a 3 element, 1 step, 2 phase lock-up clutch. 
The cases consist of a converter housing, transaxle case, rear cover and a valve 
body cover. 
Parts related to oil pressure regulation are the oil pump, which pressurizes the oil; 
the regulator, which controls the pressure setting; the solenoid valves, which 
changes the oil pressure with electrical signals; the pressure control valve, which 
controls the oil pressure coming from the solenoid valve that effects each clutch and 
brake; each kind of valve, which carry out the retention of the oil pressure through 
the lines; and finally the valve body, which houses all the valves. SECTIONAL VIEW < F4A5A >  
2004 Mitsubishi Endeavor XLS 
2004 TRANSMISSION Automatic Transaxle Overhaul - Endeavor
  
 
2004 Mitsubishi Endeavor XLS 
2004 TRANSMISSION Automatic Transaxle Overhaul - Endeavor
   
     
        
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Required Special Tools:  
MB990607: Torque Wrench Socket  MB990930: Installer Adapter  MB990931: Installer Adapter  MB990936: Installer Adapter  MB990938: Handle  MB991625: Special Socket (41)  MB991632: Clearance Dummy Plate  MD998323: Bearing Installer  MD998333: Oil Pump Remover  MD998338: Oil Pump Remover  MD998412: Guide  MD998913: Dial Gauge Extension  MD998924: Spring Compressor Retainer  
DISASSEMBLY 
CAUTION:
Because the automatic transaxle is manufactured 
from high-precision parts, care must be taken not 
to scratch or damage these parts during 
disassembly and assembly.  The working area should be covered with a 
rubber mat to keep it clean at all times.  Do not wear any cloth gloves and do not use any 
shop towels during disassembly. Use only nylon 
cloth, paper towels or any other lint-free material. Parts which have been disassembled should all 
be cleaned. Metal parts can be cleaned with 
normal detergent, but they should be dried 
completely using compressed air.  Clutch discs, plastic thrust plates and rubber 
parts should be cleaned with automatic 
 
2004 Mitsubishi Endeavor XLS 
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1. Remove the transfer and O-ring < W4A5A >  
2. Use a dial gauge to measure the input shaft end play.  
3. Remove the torque converter.  
4. Remove each bracket.  
5. Remove the dipstick.  
6. Remove the eye bolt, gaskets and the oil cooler feed tube. 
Fig. 13: Measuring Input Shaft End Play
transmission fluid (ATF).  If the transaxle body has been damaged, 
disassemble and clean the cooler system.  
 
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Fig. 22: Identifying Snap Ring From Connector
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
16. Remove the strainer and the second brake retainer oil seal. 
 
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Fig. 23: Identifying Strainer And Second Brake Retainer Oil Seal
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
17. Remove each accumulator piston and spring 
 
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Fig. 29: Removing Differential Bearing Outer Race From Transaxle Case
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
25. Remove the oil filter. 
 
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Fig. 30: Removing Oil Filter
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
26. Remove the oil pump mounting bolts (six pieces).  
27. Install s
pecial tool MD998333 in hole "A". 
 
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Fig. 31: Removing Oil Pump Mounting Bolts
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
28. Turn special tools MD998333 to remove the oil pump.  
29. Remove the oil 
pum
p gasket. 
 
2004 Mitsubishi Endeavor XLS 
2004 TRANSMISSION Automatic Transaxle Overhaul - Endeavor