Haima M3. Service Manual - part 9

 

MF515L Transmission

 1H-13 

 

 

Differential Unit Adjustment and Remounting   

Dismantling shall be determined according to the 
fault denoted in preceding content. After the 
dismantling, use naked eyes to inspect if the parts 
have problems, and prepare spare parts for the 
replacement and remount these parts, during 
which make sure all parts are clean.   

 

1.Differential left bearing  2.Differential housing  
3. Planet gear  4. Differential spacer  5.Planet 
gear shaft    6.Planet gear shaft     

7. Main reduction gear  8.Differential bolt  
9.Differential  right bearing  10.Differential half 
shaft  

1)  Mount the differential gear according to the 

illustration and follow method below to 
measure the differential’s pushing clearance.   

Special tools(A): dial gauge;(B): magnet base 
differential gear pushing clearance: 0.03-0.40mm 

Left side: use the soft bench clamp to clamp the 
differential assembly, and also insert the dial feeler 
gauge’s measuring terminal onto the gear’s upper 
surface. Use two screwdrivers to move the gear 
upwards and downwards, in addition to reading the 
gauge feeler gauge’s pointer travel.   

Right side: use similar method and insert the dial 
feeler gauge’s measuring terminal onto the gear’s 
shoulder. Use the hand to move the gear upwards 
and downwards and read the feeler gauge’s 

reading.  

 

 

1 Screwdriver 

 

2 Half 

axle 

gear 

 

2)  If the pushing clearance exceeds the specified 

value, select appropriate thrust washer from the 
following sizes for mounting, and inspect again 
if specified gear clearance range has been met.   

Thickness of thrust washers:0.9, 0.95, 1.0, 1.05, 
1.15, and 1.2mm 

3)  Drive in the spring from right side till the pin 

keeps even with differential housing surface.   

4)  Use special tool and hydraulic pressure to press 

and mount the left bearing. Special tool: 
bearing erector 6 

5) Suspend the differential assembly onto left 

bearing (see the figure) and follow the Step 4) 
to press and mount the right bearing.   

6)  Use soft bench clamp to clamp the differential 

assembly, mount main reduction gear, and then 
use eight bolts to tighten the differential 
assembly according to required torque.   

Notice 

  Other bolts beyond requirements shall not be 

used.  

Tightening torque 

(a):80-100N·m 

 

MF515L Transmission

 1H-14 

 

 

 

1 Differential 

bolt 

2 

Final reduction gear   

3 Torque 

wrench 

 

4 

Soft bench clamp   

Left/right box body   

Right box body   

1)  Mount the input shaft’s oil seal and keep the 

spring side upward. During the mounting 
process, use special tool and hammer.   

Special tool(A):bearing erector6 

 

1 

Intermediate shaft’s right bearing outer ring 

2 

Input shaft oil seal   

2)  Use special tool and hammer to mount the 

intermediate shaft’s right bearing outer ring 
and intermediate shaft’s oil tray.   

Special tools (B): Mounting connection rod   

(C): Bearing outer ring erector 

Special tools (D):Seal ring erector 

3)  Use special tool and hammer to mount the 

differential’s right oil seal till it keeps even 
with the housing surface.   

Notice 

  Make differential oil seal’s spring side face 

inward 

Special tools (E): Oil seal erector1 

Differential gear oil seal’s mounting depth: 
“a”:1.0-1.5mm 

Left Box Body   

1)  Use strap hammer and special tool to mount 

the oil seal on the left side of differential till 
the height difference with the housing surface 
ranges between 1.0mm and 1.5mm.   

Notice 

  Make the oil seal’s spring side face inward   

Special tools(A):Oil seal erector2: differential oil 
seal’s mounting depth: “a”: 1.0-1.5mm 

 

   

2)  Use special tool and hammer to drive the 

intermediate shaft’s left bearing outer ring 
and intermediate shaft’s shim into left box 
body’s left bearing hole.   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil seal

 

1. Main reducer gear bolt 
2. Final reduction gear 
3. Torque wrench 
4. Soft bench clamp 

 

MF515L Transmission

 1H-15 

 

Attached Table 1: Special Tools 

 

 

 

 

Snap ring plier 

Dial gauge 

Magnet base 

Bearing outer ring 

erector 

Spring pin ejector 

(6.0mm) 

Bearing puller 

accessories 

 

 

 

 

Box splitter 

Bearing puller 

Oil seal    erector1

Bearing  

erector4 

Gear fixer 

Slide shaft 

 

 

 

 

 

Oil seal   

erector2 

Bearing erector1 

Bearing erector2

Bearing  

erector5 

Bearing ejector 

Bush ejector 

 

 

 

 

Bearing erector2 

Spring pin 

ejector(4.5mm) 

Oil seal ejector

Bearing erector6 

Bearing erector7 

 

 

 

 

 

Bearing erector3 

Mounting connection 

rod 

Seal ring erector

 

 

 

 

 

MF515L Transmission

 1H-16 

 

Attached Table 2: Reference List of MF515L Transmission Bolt Tightening Torques 

No. Name 

Qty 

Tightening 

torque(N·m) 

Remark 

1 

Shift locking bolt assembly 

1 

20～25  

2 Shift 

stop 

pin 

1  10～15  

3 

Reverse shift fork bolt 

2 

15～20  

4 

Neutral signal sensor bolt 

1 

7～10  

5 

reverse gear shaft bolt 

1 

18～28  

6 

Release bearing mounting bolt 

2 

7～10  

7 Assembling 

bolt 

14  18～28  

8 

Reversing lamp switch assembly 

1 

15～20  

9 

Oil inlet plug 

1 

12～18  

10 

Observation plug screw 

1 

12～18  

11 Drain 

plug 

1  12～18  

12 Gearbox 

bolt 

4  10～15  

13 Lifting 

lug 

bolt 

1 

10～15  

14 

Cable bracket bolt 

2 

19～25  

15 

Oil delivery groove bolt 

1 

7～10  

16 

Suspension connection bolt 

1 

65～75  

17 Double-head 

bolt 

2 

65～75  

18 Differential 

bolt 

8 

80～100  

19 

Spring seat bolt 

2 

7～10  

 

 

 

Gearshift Mechanism

 1J-1 

 

 

 

Chapter 9  Gearshift Mechanism   

Table of Contents 

Gearshift Mechanism ······························································································1J-2 

Manual Gearshift Mechanism Dismantling/Mounting··················································1J-2 

Automatic Gearshift Mechanism Dismantling/Mounting ··············································1J-2 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gearshift Mechanism

 1J-2 

 

Gearshift Mechanism   

Manual Gearshift Mechanism 
Dismantling/Mounting 

1.  Firstly, dismantle the assistant instrument 

platform assembly, and then dismantle the 
wiring harness buckle that is fixed at the gear 
shift mechanism; 

2.  Follow the illustration to dismantle the gear 

shift mechanism, and the mounting sequence 
is reverse to the dismantling sequence.   

3.  After the mounting, confirm if the mechanism 

is fixed and can run stably.   

 

1 Gearshift 

handle 

 

2 Flange 

nut 

 

3 Locking 

bolt 

4 Flange 

nut 

 

5 Cable 

assembly 

 

6  Manual gearshift lever assembly   

Notice 

1.   Control the cable and connect it with 

the transmission correctly (no reverse mounting in 
gear selection and shift) 

2.  Control the cable fixing bracket and 

avoid reverse mounting   

3.  During the dismantling process, keep 

cautious and do not injure the cable buckle. After 
the assembling, inspection shall be conducted.   

Automatic Gearshift Mechanism 
Dismantling/Mounting 

1.  Firstly, dismantle the assistant instrument 

platform assembly, and then disconnect the 
wiring harness connectors that are connected 
with gear shift mechanism’s electrical 

elements; 

2.  Follow the illustration to dismantle parts, and 

the mounting sequence is reverse to the 
dismantling sequence.     

3.  After the mounting, confirm if the mechanism 

is fixed and can run stably.   

 

1

Gearshift handle 

2

Automatic gearshift lever assembly 

3

Cable assembly   

4

Flange  nut   

5

Locking bolt 

6

Locking bolt 

7

Flange  nut   

8

Gearshift cable bracket   

Notice 

1.  On the gear display cover assembly there 

are four clamp pins that are respectively engaged 
with four clamp slots on the gearshift lever base 
assembly, and they help fasten the parts. During 
the dismantling process, force shall be added 
slowly to take off the gear display cover along 
“right front-right rear-left rear -left front” 
sequence.  

2.  When dismantling the gearshift cable 

assembly, the gear shift lever shall be placed on P 
position, during which tightening gearshift rocker and 
gearshift cable’s nuts at the transmission’s upper 
gearshift rocker shall be loosened.   

3.  When mounting the gearshift cable, 

make sure the gearshift mechanism assembly’s 
gearshift lever is placed at the P position, and 
gearshift rocker on the transmission is also placed 
at the P position, only after that can the nuts at 
gearshift rocker be tightened. After the tightening, 
make sure the all gear indicators have normal 
display.