Loader Bobcat 853, 853H. Manual — part 81

B

TS–01619

1

2

Hex Flat Tightening Method

853, 853H Loader

–9–13–

Service Manual

HYDRAULIC CONNECTION SPECIFICATIONS (CONT’D)
O–ring Flare Fitting

The flare is the primary seal, the O–ring is the secondary
seal and helps absorb vibration and pressure pulses at the
connection [A].

If necessary, the O–ring–flare fitting can be used without an
O–ring.

Use the following procedure to tighten the O–ring flare
fitting.

Tighten the nut until it contacts with the seat. Make a mark
across the flats of both the male and female parts of the
connection (Item 1) [B].

Use the chart below to find the correct tightness needed
(Item 2) [B]. If the fitting leaks after tightening, disconnect
it and inspect the seat area for damage.

A

P–13009

O–ring Flare

Primary
Seal

Secondary
Seal