Micropump GL Series Service Instructions - Manual (Page 2)

MICROPUMP, INC.
A Unit of IDEX Corporation
PO Box 8975, Vancouver, WA 98668-8975 • Phone: 360/253-2008 • Fax: 360/253-8294
MICROPUMP LIMITED
A Subsidiary of Micropump, Inc.
Forge Close, Eaton Socon, St. Neots, Cambridgeshire, PE 19 3TP England, • Phone: (44) (0) 1480-219844 • Fax: (44) (0) 1480-476959
REVISION
LTR. DESCRIPTION DATE BY
C REVISED PER ECN 4725 11-11-98 LFK
PART NUMBER: 6779
Page 2 of 7
plate. The fluid then travels into the outlet side of the pump body and is discharged from the outlet
port.
2. Tool and Materials Required for Disassembly, Repair, and Assembly of Pump Assembly.
2.1 Hex Keys (1/8", 5/64" & 9/64").
2.2 X-acto knife, or equivalent.
2.3 Masking tape.
2.4 Sandpaper, #600 grit, wet/dry.
2.5 Surface Plate or equivalent flat surface.
2.6 Bushing Insertion Tool.
2.7 Reamer, Bushing, .251" dia. (6.4 mm dia.)
2.8 Vacuum Grease (from service kit).
2.9 Stoddard Solvent or liquid detergent.
3. Disassembly of Pump Assembly (refer to Figure 1).
Note: Prepare a clean, flat area, free of metal particles.
3.1 Place pumphead on surface with housing facing up.
Note: Exercise caution in the following step; Entrapped fluid will be released when Pump Body
(F) and Magnet Cup(O) are separated.
3.2 Remove 8 Screws (J) and pull Housing (I), Magnet Cup (O), and Backing Ring (H)(used in low pressure
versions only) straight out from Pump Body (F).
3.3 Separate Magnet Cup (O), Backing Ring (H) and Housing (I).
3.4 Loosen set screw on Driven Magnet Assembly (G) and remove from Driving Gear Shaft (L).
Note: Store Driven Magnet Assembly (G) in a clean bag (i.e. Service Kit bag).
3.5 Remove 10 (3 for low pressure version) Screws (A), pull Bearing Plate (B), Cavity Plate (M), and 2
Dowel Pins (C) straight away from Pump Body (F).
3.6 Separate Bearing Plate (B), Cavity Plate (M), 2 Dowel Pins (C) from each other.
Note: If Dowel Pin (C) is difficult to remove, protect Dowel Pin (C) with a soft material (I.E.
plastic or wood), and then remove with pliers. Replace Dowel Pin if damaged.
3.7 Remove Driving Gear (L) and Driven Gear (D) from Pump Body (F).
3.8 See Repair instructions, section 6.5.1 regarding Bushing (K) removal.
Note: Remove Bushings (K) and O-Rings (E) & (N) only if replacement is necessary.