GHA SERIES
OM--04621
PAGE E--13
MAINTENANCE AND REPAIR
Texaco
Regal R&O 220, Code No. 1531
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications:
Type
Premium quality bearing oil
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AGMA (R&O) No.
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance
Dark Red
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gravity, API
26.7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash, COC,
_
F
480
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pour Point,
_
F
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Viscosity
cSt at 40
_
C
220
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cSt at 100
_
C
18.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUS at 100
_
F
1167
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUS at 210
_
F
92.9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Viscosity Index
90
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended supplier:
Table 2. Pump Oil Specifications
RELIEF VALVE DISASSEMBLY
(Figure E-6)
NOTE
If the relief valve is low pressure, it will have one in-
ternal spring (10AE). If the relief valve is high pres-
sure, it will have two internal springs (10AE and
10AF).
Unscrew the cap (10AN) from the bonnet (10AK)
and remove the gasket (10AP). Back off the adjust-
ment capscrew (10AM) to relieve pressure on the
spring(s) (10AE and/or 10AF).
Unscrew the bonnet from the valve body (10AA).
Remove the valve (10AD) and spring(s) (10AE and/
or 10AF). The spring guide (10AH) is an O-ring fit in
the bonnet. Remove and discard the O-rings.
If the warning plate (10AB) must be replaced, re-
move the drive screws (BM), and remove the plate.
RELIEF VALVE REASSEMBLY
(Figure E-6)
Do not return the pump to service with-
out the warning plate (10AB) installed.
Failure to observe the warning on the
plate could result in destruction of the
pump, and injury or death to personnel.
Inspect the components for wear, grooves, or
other damage that might cause leakage. If any
components are worn, replace the defective parts.
If removed, attach the warning plate (10AB) to the
valve body (10AA) using the drive screws (BM).
If used, lightly oil the O-ring (O) and install it in the
groove on the bonnet (10AK).
Lightly oil the O-ring (O) and install it in the groove
on the spring guide (10AH). Start the large end of
the spring guide into the bonnet (10AK), and push
the guide in until it bottoms out.
Insert the valve (10AD), finned end first, into the
valve body (10AA). Install the spring(s) (10AE and/
or 10AF). Make certain that the spring (10AE) fits
over
the spring guide (10AH), and the optional
spring (10AF) fits
into
the guide, and thread the
bonnet into the valve body.
Install the jam nut (D) on the adjustment capscrew
(10AM) and thread the capscrew into the bonnet
until the desired height (“A”, Figure E---6) is
reached. Refer to the separate Parts List accompa-
nying your pump and determine the hydraulic size
(D, G, J, etc.) and spring option code (STD, 25D,
etc.) for your pump. See Table E---2 and adjust the
capscrew (10AM) to the proper “A” dimension for
the desired cracking pressure.
Never operate the pump without the ad-
justing screw jam nut in place. Other-
wise, the relief valve spring(s) can be
compressed too far for the valve to
