HATZ Diesel 4M42 - Manual (Page 63)

Step Activity
1 Briefly let the engine run at maximum speed and watch for the
indicator (5) to light up for a short period – depending on the
version.
In the engines 4L42C and 4M42, the following flash code indi-
cates that maintenance work is required on the air filter
▪ 7 short flashes (approx. 0.5 seconds) and
▪ 1 long flash (approx. 1.5 seconds)
(see the chapter 8.2.10 Maintaining the dry air filter,
page 74).
With mechanical air filter maintenance display:
1 Briefly let the engine run at maximum speed and watch for the
visible red field (1) in the mechanical air filter maintenance dis-
play.
The visible red field (1) indicates that maintenance work is re-
quired on the air filter (see the chapter 8.2.10 Maintaining the
dry air filter, page 74).
8.2.4 Checking the cooling air area
Safety notes
CAUTION
Danger of burns.
There is a danger of burns when working on a hot engine.
▪ Let the engine cool before maintenance.
CAUTION
Danger of injury.
When working with compressed air, foreign bodies may fly into
your eyes.
▪ Wear safety goggles.
▪ Never direct the compressed air jet toward people or toward
yourself.
2-4L41C, 2-4M41, 2-4M41Z, 4L42C, 4M42 Maintenance
HATZ Operator's Manual 63