Engine Compressor Wash (Performance Recovery) - MD Helicopters MD Explorer Servicing And Maintenance

CSP−900RMM−2
(c). Close valve for water when NG
decreases to 5%.
(d). If the water/methanol mixture was
used, motor the engine for 30 se­
conds minimum to dry the engine
and remove flammable fumes.
(6). Disconnect adapter (T406-1) from
engine wash panel.
(7). Do the dry-motor procedure on the
other engine (ref. Step (5).).
(8). Close Access Panel R210 (ref. Section
06-00-00).
Obey the starter limits (ref. ap­
CAUTION
plicable RFM). Damage to the
starter can occur.
(9). Operate engines at idle for one minute
minimum to dry the engines (ref.
applicable RFM).
E. Engine Compressor Wash (Performance
Recovery)
(Ref. Figure 215)
Special Tools
(Ref. CSP−SPM)
Item Nomenclature
T406 Compressor Wash Rig
T406−1 Adapter
NOTE:
D Prepare cleaning solution (ref. P&WC
Maintenance Manual, Directives and Re­
lated Manufacturers' Publications, Sec­
tion 01-00-00).
D At or above 365F (25C) use drinking qual­
ity water for the rinse.
D Below 365F (25C) use a rinse solution (ref.
P&WC Maintenance Manual, Directives
and Related Manufacturer Publications,
Section 01-00-00).
D The cleaning and rinse solution pressure
must be 60 to 82 psi (414 to 565 kPa).
Page 222
Revision 34
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
12-00-00
CAUTION
D Use correct cleaning and rinsing solution
mixture.
D Engine must be below 65_C (150_F).
D To prevent damage, turn off inlet particle
separator and heat/defog shutoff valves.
Figure 215. Engine Wash Panel
(1). Fill compressor wash rig (T406) with
cleaning solution and water or rinse
solution.
(2). Pressurize tanks to 60 to 82 psi (414
to 565 kPa).
(3). Open Access Panel R210 (ref. Section
06-00-00).
(4). Connect engine compressor wash rig
(T406) to engine wash panel with
adapter (T406-1).
Obey the starter limits (ref. ap­
CAUTION
plicable RFM). Damage to the
starter can occur.
(5). Dry-motor the engine (ref. applicable
RFM).
VIEW LOOKING
INBOARD
FROM RIGHT SIDE
9G12−003A