BLACKMER 111-F01, Installation, Operation And Maintenance Instructions

111-F00     Page 10/16 

MAINTENANCE:  

PUMP ASSEMBLY 

Before reassembling the pump, inspect all component 
parts for wear or damage, and replace as required. Wash 
out the bearing/seal recess of the head and remove any 
burrs or nicks from the rotor and shaft. 

Reassemble the BEARING Components first: 

To aid in the replacement of the sleeve bearing (24)the 
creation and use of a tool similar to the one shown in  Figure 
8 may be useful. 

Figure 8 – Sleeve Bearing Installation 

Bearing Bore  

Dia. “C” 

Tool  

Dim “A” 

Tool  

Dim “B” 

1.26 in.  

(32mm) 

2.05 in.  

(52 mm) 

1.25 in.  

(31.75 mm) 

1.  Inspect the sleeve bearing (24) for wear or damage and 

replace as required.   
To replace sleeve bearing: 

a.  Using an appropriately sized arbor press, remove 

the old bearing (24) from the bearing housing (57).  

b.  To aid installation and prevent bearing damage, coat 

the bearing (24) with grease and place it on the face 
of the bearing housing (57).  Align the seam in the 
bearing at 12:00 position (opposite the pump foot) 

c. 

Using an arbor press, press the bearing (24) into the 
housing (57) until it is 

flush

 with the face of the 

bearing housing.   

NOTE: Ensure the bearing does not become misaligned 
during the pressing motion 

2.  Inspect the ball bearing (24C) for wear or damage and 

replace as required. 
To replace ball bearing: 
a.  Using an appropriately sized arbor press, remove   

the old bearing (24C) from the bearing adjuster 
(188).  Discard the old bearing after removal. 

b.  To aid installation and prevent bearing damage, coat 

the bearing with grease and place it on the face of 
the bearing adjuster (188)  

c. 

Using an arbor press which only contacts the outer 
race of bearing, press the OD of the bearing into the 
bearing adjuster until fully seated. 

3.  Cylinder O-ring installation 

a.  Install a new O-ring (71) over the dowel of the Bearing 

housing (57).   

4.  Reassemble the cylinder to the bearing housing 

positioning it for the desired flow direction (

see Flow 

Direction Options

).  Install cap screws (21A) through the 

bearing housing into the cylinder.  Torque per Table 1. 

FLOW DIRECTION OPTIONS 

NO vane or rotational changes are required to reverse 
flow direction for the PV(S)6, 8.  The pump will have a 
CLOCKWISE ROTATION regardless of flow direction. 

For the pump to operate with the INTAKE port on the 

RIGHT

 as viewed from the driven end of the pump, 

position the cylinder with the pressure ports pointing up in 
relation to the feet.  See Fig 4.  

For the pump to operate with the INTAKE port on the 

LEFT

 as viewed from the driven end of the pump, position 

the cylinder with the pressure ports pointing down in 
relation to the feet.   See Fig 5. 

TO REVERSE FLOW DIRECTION 

Loosen cylinder cap screws (21A) to loosen cylinder from 
drive housing.   Rotate cylinder on drive housing 180 degrees.  
Install cap screws (21A) through bearing housing and torque 
per table 1.

5.  Assemble Rotor and Shaft 

(if disassembled).

a.  Loosely assemble rotor (13B) on to shaft (13A) 

securing with socket cap screws (13C). 
DO NOT damage the OD surface finish of the rotor 
and shaft. 

b.  Secure a piece of steel sized to fit the width and length 

of a vane slot in a vise or other holding device.  Place 
the loosely assembled rotor and shaft on to the piece 
of steel in one of the vane slots; completely filling the 
entire vane slot. 

c.  Hold the assembly securely without damaging the OD 

of the rotor or shaft. 

d.  Tighten the socket cap screws (13C).  Torque per 

Table 1.  

Figure 10 – Rotor / Shaft Assembly Torque