8
Friedrich Leutert GmbH & Co. KG
Engine Indicator S1 - Operating instructions
Piston and Cylinder
As already mentioned under section 3, the piston forms one unit with
the upper part and is not interchangeable (see fig. 3). Each piston size
requires an upper part of its own. For exchanging the cylinder (5) remove
the upper part by loosening ring nut (7), then unscrew and exchange
the cylinder using the cylinder key supplied as cylinder accessory.
Recording Mechanism
The detachable upper part of the indicator type S1 (fig. 3) forms one
single unit with the recording mechanism (46) and piston (3). Cover
(8) fastened by 2 screws protects the recording mechanism from
being damaged and only the recording lever protrudes from a slot in
the cover. For cleaning and oiling the links, take off the cover. We do
not recommend dismantling the links, for we abandoned the use of
screws to save weight, and the tiny rings securing the bolts cannot be
mounted without the application of special tools. Should the recording
mechanism be damaged, it is advisable to return the whole upper part
or rather the entire indicator to our works.
When inserting the upper part, first introduce the piston in its cylinder,
then tighten the ring nut (7) while moving the recording lever up and
down. The bent recording lever point which also serves as pencil for
recording on the wax-coated paper should touch the drum (50). The
pressure of the pencil on the drum is adjusted by turning the knurled
nut (26). The leaf spring below the knurled handle causes the recording
pencil to be lifted automatically off the drum. Leaf spring (11) arranged
laterally below the ring nut serves to prevent self-loosening.
Fig. 3 - Upper-part
