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Turbo 90™ Pump

Instruction

Manual

51255-MN

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 sus-

pension circulates, and therefore is cleaned from the inner cavi-

ties. 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, sufcient bypass ow is available to main-

tain maximum agitation. Shaft is made of stainless steel and has a

15/16” diameter with 1/4” keyway.

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 specied, 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 Cou-

pler, according to safety standards.

Collar Coupler: This coupler reduces the chances of vibration be-

cause 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 O-

rings, 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

GALLONS PER MINUTE (GPM) AT POUNDS PER SQUARE INCH AT THE GAUGE (PSIG)

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

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1 - Turbo 90™ Pump

Turbo 90™ PumpInstruction Manual51255-MNFeatures:The Turbo™ 90 is designed to operate directly from a 1000 RPM PTO shaft without attachments. Peak per

Pagina 2

Figure 1. Plumbing for Pump InstallationWhen using a quick coupler, line up key in the quick coupler with keyway on pump shaft and slide coupler into

Pagina 3 - Figure 2. Dimensions

Pump Maintenance Bearings require no lubrication. Drain. If pump remains installed on tractor, remove drain plug to drain pump. If pump has been

Pagina 4

Figure 5. Turbo™ 90 Exploded ViewNote: Turbo 90 pumps, P/N 26556-11 are equipped with face seals. These seals are six-piece as-semblies, P/N 51387. Re

Pagina 5

REF. NO. PART NO. DESCRIPTIONQUANTITY REQUIRED 26556-4 1126556-4 Cast Iron T-90 Pump Assembly with lip seals and thermoplastic impeller26556-11 Cast I

Pagina 6 - Pump Assembly

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

Pagina 7 - PROBLEM CAUSE PROCEDURE

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

Pagina 8

ReturnsAll Delavan products are warranted against manufactur-ing defects (see warranty, below). In the event you feel you have a warranty-covered, re

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