Instruction
Turbo 90™ Pump
Manual
51255-MN
Severe Service model: A Turbo 90 pump is available with a stain-
less steel impeller and long life face seals for severe service. The
stainless steel impeller will not swell or absorb chemicals because
of its steel construction; is tough, durable and virtually indestructible;
and is corrosion resistant.
Caution: Failure to use a suction strainer, as specied, may
void the product warranty.
Note: A high capacity strainer with a 20-mesh screen must
be used on the inlet side.
Note: A 1000 RPM PTO coupler must be used. The capacity
or ow of the Turbo 90 pump used with a 540 RPM
PTO coupler is about zero.
1000 RPM Quick Couplers: Quick couplers provide quick and
simple on-off installation. The body is steel and the collar is Super
Tough Nylon, color-coded International Orange for 35979, 1 3/8”
PTO Coupler, and International Yellow for 35992, 1 3/4” PTO Coupler, according to safety standards.
Features:
The Turbo™ 90 is designed to operate directly from a 1000
RPM PTO shaft without attachments. Peak performance at
slower rotation means longer life of the seals. The Turbo 90
can pump suspended materials without accumulation unlike a
conventional turbine pump. This is possible because of Pressure
Relief Passages from the seal cavities to the inlet port. The suspension circulates, and therefore is cleaned from the inner cavities. It can be used for large quantity liquid transfer, from truck
to tanks, for instance. It is well suited to high volume sprayer
pumping applications.
The impeller is made of low moisture absorption, corrosion-resist,
engineering grade thermoplastic. It has been designed to increase
pump life and smooth operation because of less rotation weight.
Seals available are either face seals or lip seals. Specify face seals
for severe service (such as abrasives). Face seals feature hard,
wear-resistant phenolic rings pressing against ceramic seats.
Bearings are isolated by drain cavities. 1 1/2” inlet and outlet
ports permit unrestricted high volume ow. Because of the high
capacity of the Turbo 90, sufcient bypass ow is available to maintain maximum agitation. Shaft is made of stainless steel and has a
15/16” diameter with 1/4” keyway.
Collar Coupler: This coupler reduces the chances of vibration because it clamps a full 360º on a 15/16” pump shaft, and on either 1
3/8” or 1 3/4” tractor PTO, like a collet. This provides better center-
ing of the pump shaft to the tractor PTO. Both ends of the coupler
must be wrench tightened onto the PTO shaft and the pump shaft
prior to operation.
Note: Do not force coupler onto the PTO spline too far.
1/4” to 3/8” of PTO spline should be visible after
coupler is in position.
Torque Bar and Chain: This part is needed to anchor a pump
mounted directly on a PTO to keep it from turning with the PTO
shaft.
Turbo 90 Repair Kits: 28455-1 repair kit for 26556-11 cast iron
pump with face seals includes one gasket, two seal rings, for Orings, two ceramic seats, two seat rings, two springs, and two seal
supports. P/N 28455-2 repair kit for 26556-4 cast iron pump with lip
seals includes one gasket and two lip seals.
Warning: When using PTO-driven equipment, leave shields
in place. Do not wear loose-tting clothing near
rotating PTO shafts.
Turbo™ 90 Flow Rates — Gallons per minute
Pump
Speed
(RPM) 0 10 20 30 40 50 60 70 80 90 100
600 45 30 19 8 — — — — — — —
800 60 47 37 27 19 11 3 — — — —
1000 75 65 55 46 37 30 24 18 12 6 —
1200 90 80 73 65 57 49 42 36 31 25 20
GALLONS PER MINUTE (GPM) AT POUNDS PER SQUARE INCH AT THE GAUGE (PSIG)
Figure 1. Plumbing for Pump Installation
Pump Installation
1.
When using a quick coupler, line up key in the
quick coupler with keyway on pump shaft and slide
coupler into place, also lining up other set screw
with spot on shaft. Tighten the set screw over the
spot on the shaft rst, then the keyway set screw.
2.
When using quick couplers, pull collar back and
slide onto the PTO shaft until it locks into place,
release collar.
3.
When using a Collar Coupler, slide onto pump
shaft, then PTO shaft, leaving 1/4” to 3/8” of PTO
spline visible. Tighten both ends of the coupler with
a wrench.
4.
Position pump below liquid level in tank to assure
priming.
5.
On other than PTO installations, check pump
rotation. An arrow on the pump shows direction of
rotation.
6.
To keep pump from rotating with PTO shaft, use
a torque bar and chain assembly 33680 (Fig. 3).
Bolt bar to pump, using two adjacent ange bolts.
Snap one end of chain to the torque bar and the
other end to a stationary part of the tractor. Mount
the torque bar so the counter force will raise up on
the pump and help relieve the side pressure due to
weight of the pump and hose. Do not fasten pump
rigidly to the tractor.
7.
With the pump in position, connect the inlet hose
to the IN port. Use a 1 1/2” I.D. hose if you need
maximum ow rates (Fig. 1).
Note: Support hoses where necessary to keep
weight off the pump.
Caution: Failure to use a suction strainer, as
specied, may void the product warranty.
8.
A high capacity strainer with a 20-mesh screen
must be used on the inlet side (Fig. 1).
9.
For in-line protection of nozzles, use a 40-mesh
strainer in the boom feed line. Use a 3/4” or 1” Ytype strainer (Fig. 1).
10.
To regulate pressure, install either a 1 1/4” ball
valve or 1” pressure regulating valve downstream
from the pump discharge (Fig. 1). Do not use a
spring-loaded valve.
11.
Check all hose connections. Loose connections
can permit air to be drawn in and the pump may
not prime properly.
Figure 2. Dimensions
Figure 3. Torque bar and chain assembly, installed
Pump Operation
Before starting, make sure all air is removed from
1.
pump and lines.
Do not use rusty supply barrels or sandy water.
2.
Caution: Running pump dry can cause excessive heat and damage seals.
Do not start pump before priming. The pump is NOT
3.
self-priming. Be sure suction line and pump are
lled with liquid. Open the pressure regulating and
boom regulating valves to be sure there is no back
pressure on pump. Do not close the discharge line
of the pump unless a means of bypassing the liquid
relief valve has been installed. Pump can then be
started and should prime. To assure ease in prime
and the bleeding of air in pumping system, install
pump so that ports are upright.
Caution: Operating above maximum limits can
damage pump.
Do not operate pump at a PTO speed in excess of
4.
1250 RPM, or a pressure higher than 100 psi (7
bars), or a temperature higher than 120º F (50º C).
Pump Maintenance
1.
Bearings require no lubrication.
2.
Drain. If pump remains installed on tractor,
remove drain plug to drain pump. If pump has
been removed from tractor, use IN and OUT
ports for draining.
3.
Flush. After use, thoroughly ush pump with clear
water. If available, use a solution of one cup of
ammonia in 10 gallons of water. This will dissolve
most residue remaining in the pump. Drain, let dry,
then ush pump with light lubricating oil.
4.
Store.
Caution: Gasoline, kerosene or fuel oil can attack
materials in pump. Do not use as storing solution.
If pump is to be stored, follow ush with a
50 percent permanent antifreeze solution. Plug ports.
Maximum Recommended Pressure:
100 PSIG (7 Bars)
Maximum Recommended Temperature:
120º F (50º C)
Maximum Recommended PTO Speed:
1250 RPM
Figure 5. Turbo™ 90 Exploded View
Note: Turbo 90 pumps, P/N 26556-11 are equipped
with face seals. These seals are six-piece assemblies, P/N 51387. Replace worn face seals
with P/N 51387. Be sure Wave Spring side is
toward impeller (5).
Note: Turbo 90 pump P/N 26556-4 is equipped with lip
seals. These seals are two-piece assemblies
which include a seal and a seal adapter in each.
If your pump is equipped with two-piece seal as-
semblies, use P/N 45005 (Turbo 90 Lip Seal)
as the replacement seal. This seal is about 1
3/4” in diameter.
If the seal adapter has been damaged, use P/N
45006 as the replacement adapter. When
replacing seal, be sure spring side faces
liquid ow.
Turbo™ 90 Pump and Accessories Parts List
REF. NO. PART NO. DESCRIPTION
26556-4 Cast Iron T-90 Pump Assembly with lip seals and thermoplastic impeller
26556-11 Cast Iron T-90 Pump Assembly with face seals and thermoplastic impeller
1 17902 Hex Nut (3/8”-16 UNC) 6 6
2 39923-1 End Plate, Cast Iron 1 1
3 39924-1 Body, Cast Iron 1 1
4 26545 Gasket 1 1
5 28709 Impeller, Thermoplastic 1 1
5a 30512 Hub 1 1
8 26544 Woodruff Key 1 1
9 26548 Snap ring, Internal 2 2
10 26665 Dust Shield 1 1
11 16228 Bearing, Shielded 2 2
12 39934 Cap Screw, Hex Head (3/8”-16 UNCx1 5/8”) 6 6
13 26547 Snap ring, External 2 2
14 39935 Cap 1 1
15 34793 Shaft 1 1
16 25785 Pipe Plug, Square Head 1 1
17 45005 Lip Seal Assembly - Includes Lip Seal and Adapter 2 —
18 51387 Face Seal Assembly — 2
A 31352-225 Washer
B 51210 Ceramic Seat
C 51211 Seal Ring
D 31352-214 O-Ring
E 51212 O-Ring
F 51213 Wave Spring
QUANTITY REQUIRED 26556-
4 11
33680 Torque Bar and Chain Assembly — —
Repair
Kits
*Both repair kits may be used in all Turbo 90 pumps.
28455-1* Repair Kit for 26556-11, pumps with Face Seals
(includes one P/N 26545, gasket, and one P/N 51387, Face Seals)
28455-2* Repair Kit for 26556-4, with Lip Seals
(includes one P/N 26545, gasket and two P/N 45005 lip seal assemblies)
Parts List
To avoid confusion and possible delays when placing an
order, always specify the Part Number and Description.
To nd the correct part number, rst locate the part in the
exploded view to the left and note the reference number.
— —
— —
Then, using the corresponding reference number in the
chart above, nd the part number in the parts list. All
parts are available through your dealer.
The numbers in parentheses are reference numbers that are found in the exploded view on page 4. Underlined parts are
included in repair kits, and can be discarded if using kit.
14. P/N 26556-4 pump with lip seals (return to previous section
if your pump has face seals):
a. Lift impeller (5) from body (3).
b. Remove Woodruff key (8) from shaft (15).
c. Using screwdriver, pry nameplate (14) from body (3).
Figure 6. Pulling end plate from body
Pump Disassembly
1. If coupler is on pump shaft, remove.
2. With a 9/16” wrench, unscrew 6 nuts (1) from capscrews (12)
and remove capscrews.
3. Screw two screws (12) into opposite threaded holes on end
plate (2). Install puller (Fig. 6). Tighten puller with a wrench to
pull end plate (2) from body (3). Lift off end plate (2).
Note: Although a puller is recommended, you can sepa-
rate the end plate (2) from the body (3) by using a 1”
diameter brass rod at the shaft end, tapping it with
a hammer.
4. Remove gasket (4).
Note: Snap rings (9,13) bearings (11) and shaft (15) should
not be removed unless damage has occurred.
5. Use snap ring pliers to remove snap ring (9) from end plate (2).
6. To remove bearing (11), push out with arbor press or use a small
piece of brass rod and gently tap with hammer.
7. Remove dust shield (10).
8. Use snap ring pliers to remove snap ring (9) from body (3).
9. Using screwdriver, pry nameplate (14) from body (3).
10. Push shaft (15) and bearing (11) out of body (3) with an arbor
press or by using a small piece of brass rod and tapping with
hammer.
11. Remove snap rings (13) from shaft (15).
12. Press bearing (11) from shaft (15).
13. P/N 26556-11, pump with face seals (skip to next section if
your pump has lip seals):
a. Pry out ceramic seat (B) and seat ring (C) from end plate (2).
b. Lift out dust shield (10) from end plate.
c. Slide seal ring (C) with O-ring from shaft.
d. Lift out three springs (F) from impeller (5).
e. Lift impeller (5) from body (3).
f. Remove Woodruff key (8) from shaft.
g. Slide other seal ring (C) with O-ring from shaft.
h. Pry out ceramic seat (B) and seal ring (C) from body (3).
i. Remove dust shield (10) from body.
d. Remove snap ring (13) from pump shaft.
e. Push the pump shaft out using an arbor press or a small
brass rod by gently tapping with a hammer.
f. Using a drift punch, from the painted side of each casting,
drive the old lip seal (17) out by hitting on the old seal case.
Discard old lip seals.
Pump Assembly
Preparation
1. Thoroughly clean all metal parts in solvent with a soft-bristle brush.
2. Coat metal parts with light lubricating oil to assure easier assembly.
3. Obtain repair kit 28455 which contains parts listed on the parts
list, page 5. Replace all old parts with new parts from repair kit.
Assembly
1. If bearings (11) were removed, lightly oil bearing cavities.
2. Place dust shield (10) in end plate (2) and, applying pressure to
outer bearing race, press bearing (11) downward until it bottoms.
3. Install snap ring (9) in end plate (2).
4. Press other bearing (11) into body (3).
5. Install snap ring (9) in body. Install inner snap ring (13) on shaft
(15) and press shaft into bearing (11). Install outer snap ring (13)
on end of shaft (15).
6. P/N 26556-11, pump with face seals (skip to next section if
your pump has lip seals):
a. Place seal support (A) in body (3).
b. Place the ceramic seat into the pump body all the way down
on the O-ring (A).
Note: Ceramic seat (B) is installed with O-ring groove and
side with marking toward the outside of the pump.
c. Lubricate the O-ring groove on the ceramic seat (B) with clean
oil or petroleum jelly. Place the ceramic seat into the body.
Carefully force the seat down over the O-ring until it is against
the seal support.
Caution: The ceramic seat may be cracked or broken if it is
placed in the body cocked or if excessive force or
metal objects are used to drive it in place.
d. Slide the new seal ring (C) onto the shaft with the internal
O-ring groove toward the inside of the pump. The small
diameter of seal ring should mate with the ceramic seat.
e. Slide the small O-ring (D) onto the shaft. Push the O-ring out
of the key way to avoid cutting the O-ring. Push the O-ring
into the groove in the seal ring.
f. Slide the small washer (E) over the shaft and into the recess
in the seal ring.
g. Slide the wave spring (F) over the shaft and onto the washer
(E). The spring will rest against the impeller hub.
h. Install the face seal in the end plate (2) in the same way as
into the body (3).
6. P/N 26556-4 pump with lip seals (return to previous section
if your pump has face seals):
a. Install lip seals (P/N 45005) using sealant such as Permatex
on the mating surfaces. Press to the bottom of the seal bores
in both end plate and body. See exploded view, page 4.
b. Tap lip seal (17) into pump body using pipe nipple or seal
driver of a diameter large enough to push on the inside of the
concave side of the seal. The cupped, concave side of the
seal faces towards the inside of the pump. The spring faces
toward the liquid ow.
c. Make sure the seal bottoms against the seal supporting edge
machined into the casting.
d. Install Woodruff key (8) in shaft (15). Be sure the key bottoms.
Turbo™ 90 Troubleshooting Guide
e. Slide impeller (5) onto shaft.
f. Tap lip seal (17) into end plate adapter (45006) using pipe
nipple or seal driver. Cupped or concave side goes toward the
inside of pump; spring faces toward liquid ow.
g. Make sure the seal bottoms against the seal supporting edge
machined into the casting.
7. Place gasket (4) on body (3).
8. With an arbor press, press on inner race and press end plate
(2) onto shaft (15).
Caution: Uneven tightening of nuts (1) and capscrews (12)
to pull end plate (2) down can crack casting.
Note: Although an arbor press is recommended, if none is
available, you can pull end plate onto body by carefully tightening nuts (1) and capscrews (12).
9. Install capscrews (12) and nuts (1) and tighten.
10. Turn shaft to be sure the pump is not binding. If pump seems to
be binding, tap shaft lightly with a soft hammer.
11. Replace nameplate (14) in body (3). Nameplate is merely
pushed into place.
PROBLEM CAUSE PROCEDURE
1. NO PRESSURE, OR
NO CAPACITY
2. EXCESSIVE NOISE
OR VIBRATION
3. PUMP RUNS, BUT
LOW CAPACITY
4. PRESSURE AT PUMP,
BUT LOW OUTPUT
AT NOZZLES
5. IMPOSSIBLE TO
ROTATE SHAFT
6. LEAK
a. Inlet line not immersed in liquid or low level a. Reposition inlet line or fill tank.
b. Pump not primed b. Prime pump; be sure mounted below water level.
c. Plugged strainer c. Clean strainer with water and soft brush if needed.
d. Intake line air leaks d. Tighten all connections, using pipe joint compound.
Check hoses for leaks.
e. Intake line blocked e. Check line and clean.
f. Pump turning wrong direction f. Check direction of arrow on pump, mount correctly.
g. Pump parts worn g. Replace using Repair Kit, or return for repair or if under warranty.
a. Loose couple a. Tighten or replace coupler.
b. Bent or damaged shaft, improperly aligned b. Replace shaft.
c. Intake line leaks; plugged strainer c. See PROCEDURES c. and d. above.
d. Worn parts, broken rotor vanes d. See PROCEDURE g. above.
a. PTO speed too slow. a. 1000 RPM required.
b. Intake line partially blocked or too small b. Clean line. Use 1 1/2” I.D. hose.
c. Too many fittings, elbows, valves c. Replumb for more direct path.
d. Plugged strainer or leaks d. See PROCEDURES c. and d., block 1.
a. Nozzle orifice too small or strainer plugged a. Replace nozzles; clean nozzle strainer.
b. Discharge line too small b. Use 1 1/2” I.D. hose.
c. Valves set incorrectly c. Check, adjust valves.
a. Improper assembly a. Gasket in place? Review assembly instructions.
b. Foreign material or corrosion in pump b. Disassemble and clean. Use clean water supply.
a. Lip seal installed backward a. Check drawing page 4. Spring should be toward liquid.
b. Worn parts b. Repair using repair kit.
c. Worn casting c. Replace pump.
Returns
All Delavan products are warranted against manufacturing defects (see warranty, below). In the event you feel
you have a warranty-covered, returnable item, return
the pump to your dealer, who will replace a warrantable
pump for you. Delavan’s “No Hassle Warranty” puts you
back in the eld sooner!
Delavan Products Warranty
Important:
Whether you are returning your pump for warranty or for
repair, you must do the following:
1. Flush chemical residue from the pump (best done
in the eld).
2. Tag pump with type of chemicals having been
sprayed.
3. Include complete description of operation problem, such as how pump was used, symptoms of
malfunction, etc.
Since pumps can contain residues of toxic chemicals
these steps are necessary to protect all the people who
handle return shipments, and to help pinpoint the reason for the breakdown.
All products sold by Delavan are warranted only to purchasers from Delavan for resale or for use in purchasers’ own business or original equipment manufacture,
against defects in workmanship or materials under normal use, maintenance and service (rental use excluded), if notice of said defect is received by Delavan at
the factory within 90 days after installation or one year
from date of shipment from the factory, whichever rst
occurs. The sole and exclusive obligation of Delavan
under this or any implied warranty shall be to replace
or, at its option, to repair, without charge, any product
which is determined by Delavan to be defective in workmanship or materials after the product is returned to
the Delavan factory, shipping costs prepaid. In no event
shall Delavan be liable to any person for indirect or
consequential damages or for injury or commercial loss
resulting from any use or inability to use and Delavan
product. Delavan expressly negates any other warranty,
express or implied, including any warranty of merchant-
ability or tness for a particular purpose, or arising from
any course of dealing or custom or usage of trade.
No person, including any dealer or representative of
Delavan, is authorized to make any representation or
warranty on behalf of Delavan in addition to or inconsistent with these provisions. Purchasers to whom these
provisions apply agree to hold Delavan harmless from
claims by their customers in excess of the obligations of
Delavan expressly set forth herein.
1228 Chestnut Ave. • Minneapolis, MN 55403
Toll Free: 1-866-DELAVAN (335-2826)
(612) 333-3189
Toll Free Fax: 1-888-726-5906
(612) 333-3231
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