HATZ Diesel 4M42 - Manual (Page 88)

Procedure
Step Activity
1 Remove the capsule hood and the side panel trim (see the
chapter 5 Engine design, page 25).
2 Turn the starting key to position I.
3 Pull the hose (3) off of the exhaust manifold.
Electrical air filter maintenance display
NOTE:
On engine types 4L42 and 4M42, this function test cannot be
performed.
4 Generate a vacuum by sucking forcefully at the hose end.
The indicator (5) lights up.
5 If there is no reaction, check the following:
▪ Electrical part; cable connections, etc.
▪ Indicator
▪ Function of the maintenance switch.
Mechanical air filter maintenance display
4 Generate a vacuum by sucking forcefully at the hose end.
The red field (1) engages.
5 After the function test, unlock the red field (1) by pressing the re-
set button (2).
After the function test
6 Replace the faulty parts.
7 Reattach the hose (3) of the exhaust manifold.
8 Mount the capsule and air guide parts again.
Maintenance 2-4L41C, 2-4M41, 2-4M41Z, 4L42C, 4M42
88 Operator's Manual HATZ