Diesel Cleaning & Bleeding Tappets/Lash Adjusters/Hydraulic lifters - MD171130 MD376687 - 4G15, 4G63 etc

LASH ADJUSTERS - Taken from the Mitsubishi Z27AG/4G15 Manual

CAUTION
• The lash adjuster is a precision-engineered component. Do not allow dust or other foreign matter to enter it.
• Do not disassemble lash adjusters.
• Use only non-contaminated diesel fuel to clean the lash adjuster.

1. Prepare three containers and approximately five liters of diesel fuel. Pour into each container the diesel fuel in an amount enough for a lash adjuster placed in the container in its upright
position to completely submerge.









2. Place the lash adjuster in container A and wash its outside surface.
NOTE: Use a nylon brush if there are hard-to-remove deposits.

CAUTION
The steel ball spring of the lash adjuster is extremely weak. The lash adjuster's functionality 
may be badly affected if the special tool is inserted too strongly.


3. While gently pushing the internal steel ball using the special tool Air bleed wire (MD998442), move the plunger in and out 5 − 10 times to eliminate stiffness in the plunger and expel contaminated oil.

NOTE: The plunger must be free from jamming and any other abnormalities. If a defect is found in 
plunger operation, replace the lash adjuster.

CAUTION
The hole in the side of the lash adjuster must be directed toward the inside of container A. Never 
direct it against any person.

4. Take the lash adjuster out of the container, then move the plunger by pushing the steel ball gently to discharge the diesel fuel from the pressure chamber.




CAUTION
The steel ball spring of the lash adjuster is extremely weak. The lash adjuster's functionality 
may be badly affected if the special tool is inserted too strongly.

5. Soak the lash adjuster in the diesel fuel in container B. Move the plunger in and out 5 − 10
times by gently pushing the internal steel ball using the special tool Air bleed wire (MD998442)
until the plunger moves smoothly to wash the lash adjusterís pressure chamber.




CAUTION
The hole in the side of the lash adjuster must be directed toward the inside of container B. Never 
direct it against any person.

6. Take the lash adjuster out of the container, then move the plunger by pushing the steel ball gently to discharge the diesel fuel from the pressure chamber.

CAUTION
Do not use container C for cleaning. If cleaning is performed in container C, foreign matter could 
enter the pressure chamber when the chamber is filled with diesel fuel.

7. Soak the lash adjuster in the diesel fuel in container C. Gently push the internal steel ball
using the special tool Air bleed wire (MD998442).

8. Place the lash adjuster upright with the plunger at the top. Push the plunger firmly until it makes a full stroke, then return the plunger slowly and release the hold of the steel ball to allow the pressure chamber to be filled with diesel fuel.

9. Take the lash adjuster out of the container, place it upright with the plunger at the top, and push the plunger firmly. The plunger must not move at all.

NOTE: If the lash adjuster contracts, perform the operations 7 through 9 again. Replace the lash 
adjuster if it still contracts even after the pressure chamber has completely been filled with diesel 
fuel (air has been bled).

10.Keep the serviced lash adjusters in their upright positions to prevent diesel fuel from spilling out. Protect them from dust or other foreign matter. Install the lash adjusters onto the engine as soon as possible.

Compatible Models (according to camskill.co.uk)
CA3A CB3A MIRAGE/LANCER 4G91 DOHC
CA4A MIRAGE 4G92 DOHC (NON MIVEC)
CB6A MIRAGE/LANCER 6A10 DOHC
CD5A CD5W LANCER/LIBERO 4G93 DOHC TURBO
CJ2A CK2A MIRAGE/LANCER 4G15 DOHC
CM5A MIRAGE/LANCER 4G93 DOHC TURBO
CQ2A CS2A MIRAGE/LANCER 4G15 DOHC
CQ5A CS5A MIRAGE/LANCER 4G93 DOHC
CU4W AIRTRECK 4G64 DOHC
DA2A CARISMA 4G93 DOHC
DE3A FTO 6A12 DOHC (NON MIVEC)
E52A GALANT 4G93 DOHC
E54A E64A E74A E84A GALANT 6A12 DOHC
EA1A EC1A EA1W EC1W GALANT/LEGNUM 4G93 DOHC
EA3A EC3A EA3W EC3W GALANT/LEGNUM 4G64 DOHC
EA7A EC7A EA7W EC7W GALANT/LEGNUM 4G94 DOHC
EC5A EA5W EC5W GALANT/LEGNUM 6A13 DOHC
F36A F46A DIAMANTE 6G72 SOHC
N61W N71W RVR 4G93 DOHC
N64WG N74WG RVR 4G64 DOHC
N84W N94W CHARIOT 4G64 DOHC
S33A S43A PROUDIA 8A80 DOHC
Z25A Z26A COLT 4G19 DOHC MIVEC
Z27A Z28A COLT 4G15 DOHC MIVEC

Notes 1 These are 3mm hole type

Part #  MD376687   MD377239   MD171130   MD359419