55: CTS 400 Flex Owner’s Guide
INTERVAL HOURS - 25 TO 575
Engine oil and filter
Blower oil
High pressure
pump oil
Low pressure pump
tuning
SERVICE
50
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575
Inspect recovery tank
filters for tears,
holes, etc. Repair or
replace as needed.
CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH
Inspect the vacuum
relief valve. Clean
and lubricate as
necessary.
CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH
Clean the recovery
tank thoroughly with
pressure washer.
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
C/I
Check the oil level in
the blower. Add oil if
needed.
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Check the pump
drive belt for wear
and proper tension.
Tighten as needed.
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Check all the hoses
and wiring for wear
and chafing. Secure
as needed.
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Flush the water and
chemical systems
with solution of equal
parts white vinegar
and water.
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
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F
F
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F
F
Check all the nuts
and bolts. Tighten as
needed.*
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Change the engine
oil and filter every 50
hours. (Every 25
hours if operating in
high ambient
temperatures or
heavy use
conditions.)
R
R
R
R
R
R
R
R
R
R
R
SERVICE
50
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575
Check the engine air
filter. Clean or
replace as
necessary.
CH
CH
CH
CH
CH
Check the water level
in battery. Fill as
needed.
CH
CH
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CH
CH
Clean QC filter and
orifice with water
C/I
C/I
C/I
C/I
C/I
Clean the battery
terminals as needed.
C/I
C/I
C/I
C/I
C/I
Lubricate inlet float
plunger with
SuperLube O-ring
grease #92003 or
equivalent.
C/L
C/L
C/L
C/L
C/L
SERVICE
50
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575
Check the coupler
element (rubber
insert) for cracks or
wear. Replace as
necessary.
CH
CH
Check the fuel lines.
Repair or replace as
needed.
CH
Gap the spark plugs
to 0.030”. Replace if
excessive carbon
buildup is visible.
C/I
Change the fuel filter.
R
Change pump drive
belt.
R
SERVICE
50
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575
Change the blower
oil.
R
Change the high
pressure pump oil.
R
Check the engine
valve clearance
(intake and exhaust
0.004” - 0.006”)
CH
Change the fuel filter.
R
SERVICE
50
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575
Change air filters.
Check carburetor.
Clean or replace as
necessary.
Replace the coupler
element (rubber
insert) for cracks or
wear. Replace as
necessary
Clean the heat
exchanger core.
Adjust
Check
Clean and Inspect
Clean and Lubricate
Flush
Replace
MAN-46783 Rev. A
Perform Flex pump tuning procedure every 60 days
DAILY MAINTENANCE CTS 400
Check the engine oil level. Add oil if needed.
Check the high pressure pump oil. Add oil if needed.
Inspect and clean the recovery tank filters.
Inspect and clean the orifices and filters.
Inspect and clean the garden hose screen.
Inspect the truckmount for water and oil leaks, loose electrical connections, etc. and repair as needed.
Lubricate the blower lube port with HydraMaster-recommended spray lubricant.
INTERVAL IN HOURS CTS 400
Change engine oil and filter after first 8 hours; afterwards, change the engine oil and filter every 50 hours.
Change the blower oil after first 100 hours of use.
Change high pressure pump oil after first 50 hours of operation. (Every 500 hours thereafter.)
25
CH
CH
C/I
CH
CH
CH
F
CH
25
C/I
C/L
F
R
25
* Check engine and blower mounting bolts, coupler retaining bolts, exhaust fasteners, etc.
A
CH
Inspect and rinse the recovery tank.
25
25