|
| |
TM 5-2420-222-20-3
HYDRAULIC EARTH DRILL BORING HEAD - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
FILLING - CONTINUED
21
Chain housing (1)
Fill plug (2) and
a.
Using 1 1/8-inch, 1/2-inch drive
gasket (3)
socket and ratchet handle, unscrew
and take out.
b.
If gasket was not replaced during
draining, get rid of.
22
Hydraulic earth
Chain housing (1)
Add proper grade of hydraulic fluid
drill boring
(LO 5-2420-222-12) until fluid seeps
head (4)
from level plug hole.
NOTE
If gasket has just been replaced during draining, it may be reused. Otherwise, use new gasket.
23
Chain housing (1
Gasket (3) and
Screw in and tighten using 1 1/8-inch,
fill plug (2)
1/2-inch drive socket and ratchet handle.
24
Level plug (5)
a. Screw in and tighten using 3/16-inch
socket-head screw key.
b. Get rid of drained fluid (page 2-137).
NOTE
Steps 25 thru 29 fill hydraulic earth drill boring head gear case.
25
Gear case (6)
Drain plug (7)
a.
Place 10-gallon container underneath.
b.
Using 5/16-inch socket-head screw
key, unscrew and take out.
NOTE
If hydraulic fluid seeps from level plug hole, skip steps 26 thru 28.
26
Fill plug (8) and
a.
Using 1 1/8-inch open-end wrench,
gasket (9)
unscrew and take out.
b.
If gasket was not replaced during
draining, get rid of.
27
Hydraulic earth
Gear case (1)
Add proper grade of hydraulic fluid
drill boring
(LO 5-2420-222-12) until fluid seeps
head (4)
from level plug hole.
2-1876
|
